diff --git a/jni/NativeFormats/fbreader/src/library/Book.cpp b/jni/NativeFormats/fbreader/src/library/Book.cpp
index b0a19a610..750d6ccfb 100644
--- a/jni/NativeFormats/fbreader/src/library/Book.cpp
+++ b/jni/NativeFormats/fbreader/src/library/Book.cpp
@@ -86,10 +86,7 @@ shared_ptr<Book> Book::loadFromFile(const ZLFile &file) {
 */
 
 shared_ptr<Book> Book::loadFromJavaBook(JNIEnv *env, jobject javaBook) {
-	jobject javaFile = AndroidUtil::Field_Book_File->value(javaBook);
-	const std::string path = AndroidUtil::Method_ZLFile_getPath->callForCppString(javaFile);
-	env->DeleteLocalRef(javaFile);
-
+	const std::string path = AndroidUtil::Method_Book_getPath->callForCppString(javaBook);
 	const std::string title = AndroidUtil::Method_Book_getTitle->callForCppString(javaBook);
 	const std::string language = AndroidUtil::Method_Book_getLanguage->callForCppString(javaBook);
 	const std::string encoding = AndroidUtil::Method_Book_getEncodingNoDetection->callForCppString(javaBook);
diff --git a/jni/NativeFormats/util/AndroidUtil.cpp b/jni/NativeFormats/util/AndroidUtil.cpp
index a8954c6b6..c9dfd304b 100644
--- a/jni/NativeFormats/util/AndroidUtil.cpp
+++ b/jni/NativeFormats/util/AndroidUtil.cpp
@@ -104,7 +104,7 @@ shared_ptr<Constructor> AndroidUtil::Constructor_ZLFileImage;
 
 shared_ptr<StaticObjectMethod> AndroidUtil::StaticMethod_Paths_tempDirectory;
 
-shared_ptr<ObjectField> AndroidUtil::Field_Book_File;
+shared_ptr<StringMethod> AndroidUtil::Method_Book_getPath;
 shared_ptr<StringMethod> AndroidUtil::Method_Book_getTitle;
 shared_ptr<StringMethod> AndroidUtil::Method_Book_getLanguage;
 shared_ptr<StringMethod> AndroidUtil::Method_Book_getEncodingNoDetection;
@@ -187,7 +187,7 @@ bool AndroidUtil::init(JavaVM* jvm) {
 
 	StaticMethod_Paths_tempDirectory = new StaticObjectMethod(Class_Paths, "tempDirectory", Class_java_lang_String, "()");
 
-	Field_Book_File = new ObjectField(Class_AbstractBook, "File", Class_ZLFile);
+	Method_Book_getPath = new StringMethod(Class_AbstractBook, "getPath", "()");
 	Method_Book_getTitle = new StringMethod(Class_AbstractBook, "getTitle", "()");
 	Method_Book_getLanguage = new StringMethod(Class_AbstractBook, "getLanguage", "()");
 	Method_Book_getEncodingNoDetection = new StringMethod(Class_AbstractBook, "getEncodingNoDetection", "()");
diff --git a/jni/NativeFormats/util/AndroidUtil.h b/jni/NativeFormats/util/AndroidUtil.h
index 9fe0fd6ae..e11ce86f0 100644
--- a/jni/NativeFormats/util/AndroidUtil.h
+++ b/jni/NativeFormats/util/AndroidUtil.h
@@ -142,7 +142,7 @@ public:
 
 	static shared_ptr<StaticObjectMethod> StaticMethod_Paths_tempDirectory;
 
-	static shared_ptr<ObjectField> Field_Book_File;
+	static shared_ptr<StringMethod> Method_Book_getPath;
 	static shared_ptr<StringMethod> Method_Book_getTitle;
 	static shared_ptr<StringMethod> Method_Book_getLanguage;
 	static shared_ptr<StringMethod> Method_Book_getEncodingNoDetection;