diff --git a/fbreader/app/src/main/java/org/geometerplus/fbreader/book/AbstractBook.java b/fbreader/app/src/main/java/org/geometerplus/fbreader/book/AbstractBook.java
index d80c4e13b..e35edf6f2 100644
--- a/fbreader/app/src/main/java/org/geometerplus/fbreader/book/AbstractBook.java
+++ b/fbreader/app/src/main/java/org/geometerplus/fbreader/book/AbstractBook.java
@@ -50,14 +50,19 @@ public abstract class AbstractBook extends TitledEntity<AbstractBook> {
 
 	public volatile boolean HasBookmark;
 
-	protected volatile boolean myIsSaved;
+	protected enum SaveState {
+		Saved,
+		ProgressNotSaved,
+		NotSaved;
+	};
+	protected volatile SaveState mySaveState = SaveState.NotSaved;
 
 	AbstractBook(long id, String title, String encoding, String language) {
 		super(title);
 		myId = id;
 		myEncoding = encoding;
 		myLanguage = language;
-		myIsSaved = true;
+		mySaveState = SaveState.Saved;
 	}
 
 	public abstract String getPath();
@@ -71,28 +76,28 @@ public abstract class AbstractBook extends TitledEntity<AbstractBook> {
 		setLanguage(book.myLanguage);
 		if (!ComparisonUtil.equal(myAuthors, book.myAuthors)) {
 			myAuthors = book.myAuthors != null ? new ArrayList<Author>(book.myAuthors) : null;
-			myIsSaved = false;
+			mySaveState = SaveState.NotSaved;
 		}
 		if (!ComparisonUtil.equal(myTags, book.myTags)) {
 			myTags = book.myTags != null ? new ArrayList<Tag>(book.myTags) : null;
-			myIsSaved = false;
+			mySaveState = SaveState.NotSaved;
 		}
 		if (!MiscUtil.listsEquals(myLabels, book.myLabels)) {
 			myLabels = book.myLabels != null ? new ArrayList<Label>(book.myLabels) : null;
-			myIsSaved = false;
+			mySaveState = SaveState.NotSaved;
 		}
 		if (!ComparisonUtil.equal(mySeriesInfo, book.mySeriesInfo)) {
 			mySeriesInfo = book.mySeriesInfo;
-			myIsSaved = false;
+			mySaveState = SaveState.NotSaved;
 		}
 		if (!MiscUtil.listsEquals(myUids, book.myUids)) {
 			myUids = book.myUids != null ? new ArrayList<UID>(book.myUids) : null;
-			myIsSaved = false;
+			mySaveState = SaveState.NotSaved;
 		}
 		setProgress(book.myProgress);
 		if (HasBookmark != book.HasBookmark) {
 			HasBookmark = book.HasBookmark;
-			myIsSaved = false;
+			mySaveState = SaveState.NotSaved;
 		}
 	}
 
@@ -130,7 +135,7 @@ public abstract class AbstractBook extends TitledEntity<AbstractBook> {
 	public void removeAllAuthors() {
 		if (myAuthors != null) {
 			myAuthors = null;
-			myIsSaved = false;
+			mySaveState = SaveState.NotSaved;
 		}
 	}
 
@@ -141,10 +146,10 @@ public abstract class AbstractBook extends TitledEntity<AbstractBook> {
 		if (myAuthors == null) {
 			myAuthors = new ArrayList<Author>();
 			myAuthors.add(author);
-			myIsSaved = false;
+			mySaveState = SaveState.NotSaved;
 		} else if (!myAuthors.contains(author)) {
 			myAuthors.add(author);
-			myIsSaved = false;
+			mySaveState = SaveState.NotSaved;
 		}
 	}
 
@@ -171,7 +176,7 @@ public abstract class AbstractBook extends TitledEntity<AbstractBook> {
 		}
 		if (!getTitle().equals(title)) {
 			super.setTitle(title);
-			myIsSaved = false;
+			mySaveState = SaveState.NotSaved;
 		}
 	}
 
@@ -191,14 +196,14 @@ public abstract class AbstractBook extends TitledEntity<AbstractBook> {
 		if (mySeriesInfo == null) {
 			if (name != null) {
 				mySeriesInfo = new SeriesInfo(name, index);
-				myIsSaved = false;
+				mySaveState = SaveState.NotSaved;
 			}
 		} else if (name == null) {
 			mySeriesInfo = null;
-			myIsSaved = false;
+			mySaveState = SaveState.NotSaved;
 		} else if (!name.equals(mySeriesInfo.Series.getTitle()) || mySeriesInfo.Index != index) {
 			mySeriesInfo = new SeriesInfo(name, index);
-			myIsSaved = false;
+			mySaveState = SaveState.NotSaved;
 		}
 	}
 
@@ -211,7 +216,7 @@ public abstract class AbstractBook extends TitledEntity<AbstractBook> {
 		if (!ComparisonUtil.equal(myLanguage, language)) {
 			myLanguage = language;
 			resetSortKey();
-			myIsSaved = false;
+			mySaveState = SaveState.NotSaved;
 		}
 	}
 
@@ -222,7 +227,7 @@ public abstract class AbstractBook extends TitledEntity<AbstractBook> {
 	public void setEncoding(String encoding) {
 		if (!ComparisonUtil.equal(myEncoding, encoding)) {
 			myEncoding = encoding;
-			myIsSaved = false;
+			mySaveState = SaveState.NotSaved;
 		}
 	}
 
@@ -264,7 +269,7 @@ public abstract class AbstractBook extends TitledEntity<AbstractBook> {
 	public void removeAllTags() {
 		if (myTags != null) {
 			myTags = null;
-			myIsSaved = false;
+			mySaveState = SaveState.NotSaved;
 		}
 	}
 
@@ -275,7 +280,7 @@ public abstract class AbstractBook extends TitledEntity<AbstractBook> {
 			}
 			if (!myTags.contains(tag)) {
 				myTags.add(tag);
-				myIsSaved = false;
+				mySaveState = SaveState.NotSaved;
 			}
 		}
 	}
@@ -314,13 +319,13 @@ public abstract class AbstractBook extends TitledEntity<AbstractBook> {
 		}
 		if (!myLabels.contains(label)) {
 			myLabels.add(label);
-			myIsSaved = false;
+			mySaveState = SaveState.NotSaved;
 		}
 	}
 
 	public void removeLabel(String label) {
 		if (myLabels != null && myLabels.remove(new Label(label))) {
-			myIsSaved = false;
+			mySaveState = SaveState.NotSaved;
 		}
 	}
 
@@ -351,7 +356,7 @@ public abstract class AbstractBook extends TitledEntity<AbstractBook> {
 		}
 		if (!myUids.contains(uid)) {
 			myUids.add(uid);
-			myIsSaved = false;
+			mySaveState = SaveState.NotSaved;
 		}
 	}
 
@@ -366,7 +371,9 @@ public abstract class AbstractBook extends TitledEntity<AbstractBook> {
 	public void setProgress(RationalNumber progress) {
 		if (!ComparisonUtil.equal(myProgress, progress)) {
 			myProgress = progress;
-			myIsSaved = false;
+			if (mySaveState == SaveState.Saved) {
+				mySaveState = SaveState.ProgressNotSaved;
+			}
 		}
 	}
 
diff --git a/fbreader/app/src/main/java/org/geometerplus/fbreader/book/BookCollection.java b/fbreader/app/src/main/java/org/geometerplus/fbreader/book/BookCollection.java
index 368d1d3b9..9692e08fc 100644
--- a/fbreader/app/src/main/java/org/geometerplus/fbreader/book/BookCollection.java
+++ b/fbreader/app/src/main/java/org/geometerplus/fbreader/book/BookCollection.java
@@ -211,7 +211,7 @@ public class BookCollection extends AbstractBookCollection<DbBook> {
 		synchronized (myBooksByFile) {
 			final DbBook existing = myBooksByFile.get(book.File);
 			if (existing == null) {
-				if (book.getId() == -1 && !book.save(myDatabase, true)) {
+				if (book.getId() == -1 && book.save(myDatabase, true) == DbBook.WhatIsSaved.Nothing) {
 					return false;
 				}
 
@@ -230,9 +230,13 @@ public class BookCollection extends AbstractBookCollection<DbBook> {
 				return true;
 			} else if (force) {
 				existing.updateFrom(book);
-				if (existing.save(myDatabase, false)) {
-					fireBookEvent(BookEvent.Updated, existing);
-					return true;
+				switch (existing.save(myDatabase, false)) {
+					case Everything:
+						fireBookEvent(BookEvent.Updated, existing);
+						return true;
+					case Progress:
+						fireBookEvent(BookEvent.ProgressUpdated, existing);
+						return true;
 				}
 			}
 			return false;
diff --git a/fbreader/app/src/main/java/org/geometerplus/fbreader/book/BookEvent.java b/fbreader/app/src/main/java/org/geometerplus/fbreader/book/BookEvent.java
index 01a23f0e4..17b6715df 100644
--- a/fbreader/app/src/main/java/org/geometerplus/fbreader/book/BookEvent.java
+++ b/fbreader/app/src/main/java/org/geometerplus/fbreader/book/BookEvent.java
@@ -24,6 +24,7 @@ public enum BookEvent {
 	Updated,
 	Removed,
 	Opened,
+	ProgressUpdated,
 	BookmarksUpdated,
 	BookmarkStyleChanged
 }
diff --git a/fbreader/app/src/main/java/org/geometerplus/fbreader/book/BookUtil.java b/fbreader/app/src/main/java/org/geometerplus/fbreader/book/BookUtil.java
index e63b9aa96..c6d14b135 100644
--- a/fbreader/app/src/main/java/org/geometerplus/fbreader/book/BookUtil.java
+++ b/fbreader/app/src/main/java/org/geometerplus/fbreader/book/BookUtil.java
@@ -140,7 +140,7 @@ public abstract class BookUtil {
 		book.mySeriesInfo = null;
 		book.myUids = null;
 
-		book.myIsSaved = false;
+		book.mySaveState = AbstractBook.SaveState.NotSaved;
 
 		plugin.readMetainfo(book);
 		if (book.myUids == null || book.myUids.isEmpty()) {
diff --git a/fbreader/app/src/main/java/org/geometerplus/fbreader/book/DbBook.java b/fbreader/app/src/main/java/org/geometerplus/fbreader/book/DbBook.java
index 046070fec..40b5d75a8 100644
--- a/fbreader/app/src/main/java/org/geometerplus/fbreader/book/DbBook.java
+++ b/fbreader/app/src/main/java/org/geometerplus/fbreader/book/DbBook.java
@@ -44,7 +44,7 @@ public final class DbBook extends AbstractBook {
 	DbBook(ZLFile file, FormatPlugin plugin) throws BookReadingException {
 		this(-1, plugin.realBookFile(file), null, null, null);
 		BookUtil.readMetainfo(this, plugin);
-		myIsSaved = false;
+		mySaveState = SaveState.NotSaved;
 	}
 
 	@Override
@@ -60,7 +60,7 @@ public final class DbBook extends AbstractBook {
 		myUids = database.listUids(myId);
 		myProgress = database.getProgress(myId);
 		HasBookmark = database.hasVisibleBookmark(myId);
-		myIsSaved = true;
+		mySaveState = SaveState.Saved;
 		if (myUids == null || myUids.isEmpty()) {
 			try {
 				BookUtil.getPlugin(pluginCollection, this).readUids(this);
@@ -70,11 +70,48 @@ public final class DbBook extends AbstractBook {
 		}
 	}
 
-	boolean save(final BooksDatabase database, boolean force) {
-		if (!force && myId != -1 && myIsSaved) {
-			return false;
+	enum WhatIsSaved {
+		Nothing,
+		Progress,
+		Everything;
+	}
+
+	WhatIsSaved save(BooksDatabase database, boolean force) {
+		if (force || myId == -1) {
+			mySaveState = SaveState.NotSaved;
 		}
 
+		switch (mySaveState) {
+			case Saved:
+				return WhatIsSaved.Nothing;
+			case ProgressNotSaved:
+				return saveProgress(database) ? WhatIsSaved.Progress : WhatIsSaved.Nothing;
+			default:
+			case NotSaved:	
+				return saveFull(database) ? WhatIsSaved.Everything : WhatIsSaved.Nothing;
+		}
+	}
+
+	private boolean saveProgress(final BooksDatabase database) {
+		final boolean[] result = new boolean[] { false };
+		database.executeAsTransaction(new Runnable() {
+			public void run() {
+				if (myId != -1 && myProgress != null) {
+					database.saveBookProgress(myId, myProgress);
+					result[0] = true;
+				}
+			}
+		});
+
+		if (result[0]) {
+			mySaveState = SaveState.Saved;
+			return true;
+		} else {
+			return false;
+		}
+	}
+
+	private boolean saveFull(final BooksDatabase database) {
 		final boolean[] result = new boolean[] { true };
 		database.executeAsTransaction(new Runnable() {
 			public void run() {
@@ -127,7 +164,7 @@ public final class DbBook extends AbstractBook {
 		});
 
 		if (result[0]) {
-			myIsSaved = true;
+			mySaveState = SaveState.Saved;
 			return true;
 		} else {
 			return false;
@@ -185,17 +222,17 @@ public final class DbBook extends AbstractBook {
 		if (!MiscUtil.listsEquals(myTags, other.myTags) &&
 			MiscUtil.listsEquals(myTags, base.myTags)) {
 			myTags = other.myTags != null ? new ArrayList<Tag>(other.myTags) : null;
-			myIsSaved = false;
+			mySaveState = SaveState.NotSaved;
 		}
 		if (!ComparisonUtil.equal(mySeriesInfo, other.mySeriesInfo) &&
 			ComparisonUtil.equal(mySeriesInfo, base.mySeriesInfo)) {
 			mySeriesInfo = other.mySeriesInfo;
-			myIsSaved = false;
+			mySaveState = SaveState.NotSaved;
 		}
 		if (!MiscUtil.listsEquals(myUids, other.myUids) &&
 			MiscUtil.listsEquals(myUids, base.myUids)) {
 			myUids = other.myUids != null ? new ArrayList<UID>(other.myUids) : null;
-			myIsSaved = false;
+			mySaveState = SaveState.NotSaved;
 		}
 	}
 
diff --git a/fbreader/app/src/main/java/org/geometerplus/fbreader/library/TitleListTree.java b/fbreader/app/src/main/java/org/geometerplus/fbreader/library/TitleListTree.java
index e20b4e5d5..cc2b971f7 100644
--- a/fbreader/app/src/main/java/org/geometerplus/fbreader/library/TitleListTree.java
+++ b/fbreader/app/src/main/java/org/geometerplus/fbreader/library/TitleListTree.java
@@ -83,7 +83,6 @@ public class TitleListTree extends FirstLevelTree {
 				} else {
 					return super.onBookEvent(event, book);
 				}
-			default:
 			case Updated:
 				if (myGroupByFirstLetter) {
 					// TODO: remove old tree (?)
@@ -93,6 +92,8 @@ public class TitleListTree extends FirstLevelTree {
 					changed |= createBookWithAuthorsSubtree(book);
 					return changed;
 				}
+			default:
+				return super.onBookEvent(event, book);
 		}
 	}