diff --git a/app/src/main/java/io/timelimit/android/util/DayNameUtil.kt b/app/src/main/java/io/timelimit/android/util/DayNameUtil.kt
index f2ba39a..6dc47c5 100644
--- a/app/src/main/java/io/timelimit/android/util/DayNameUtil.kt
+++ b/app/src/main/java/io/timelimit/android/util/DayNameUtil.kt
@@ -1,5 +1,5 @@
 /*
- * TimeLimit Copyright <C> 2019 - 2020 Jonas Lochmann
+ * TimeLimit Copyright <C> 2019 - 2022 Jonas Lochmann
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -39,6 +39,7 @@ object DayNameUtil {
             }
         }
 
-        return JoinUtil.join(dayGroups, context)
+        return if (dayGroups.isEmpty()) context.getString(R.string.util_day_no_day)
+            else JoinUtil.join(dayGroups, context)
     }
 }
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_edit_time_limit_rule_dialog.xml b/app/src/main/res/layout/fragment_edit_time_limit_rule_dialog.xml
index d34b3b6..8abaa141 100644
--- a/app/src/main/res/layout/fragment_edit_time_limit_rule_dialog.xml
+++ b/app/src/main/res/layout/fragment_edit_time_limit_rule_dialog.xml
@@ -1,5 +1,5 @@
 <!--
-  TimeLimit Copyright <C> 2019 - 2020 Jonas Lochmann
+  TimeLimit Copyright <C> 2019 - 2022 Jonas Lochmann
   This program is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation version 3 of the License.
@@ -248,8 +248,11 @@
                 android:layout_height="wrap_content" />
 
             <TextView
+                android:paddingTop="4dp"
+                android:paddingBottom="4dp"
                 android:visibility="@{applyToZeroDays ? View.VISIBLE : View.GONE}"
                 android:textAppearance="?android:textAppearanceSmall"
+                android:textColor="@color/orange_text"
                 android:text="@string/category_time_limit_rules_warning_zero_day_part"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content" />
@@ -275,7 +278,6 @@
                     android:layout_height="wrap_content" />
 
                 <Button
-                    android:enabled="@{!applyToZeroDays}"
                     android:layout_marginEnd="4dp"
                     android:layout_marginStart="4dp"
                     android:onClick="@{() -> handlers.onSaveRule()}"
diff --git a/app/src/main/res/values-de/strings.xml b/app/src/main/res/values-de/strings.xml
index e3d2753..8e41403 100644
--- a/app/src/main/res/values-de/strings.xml
+++ b/app/src/main/res/values-de/strings.xml
@@ -1622,6 +1622,7 @@
     <string name="util_time_used"><xliff:g example="4 minutes" id="used time">%1$s</xliff:g> benutzt</string>
 
     <string name="util_day_from_to">%s bis %s</string>
+    <string name="util_day_no_day">an keinen Tagen</string>
 
     <string name="widget_msg_unconfigured">Dieses Widget funktioniert nur auf beschränkten Geräten</string>
     <string name="widget_msg_no_child">Momentan hat dieses Gerät keinen Kind-Benutzer</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 5834600..21084fa 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1669,6 +1669,7 @@
     <string name="util_time_used">Used <xliff:g example="4 minutes" id="used time">%1$s</xliff:g></string>
 
     <string name="util_day_from_to">%s to %s</string>
+    <string name="util_day_no_day">at no days</string>
 
     <string name="widget_msg_unconfigured">This Widget only works on limited devices</string>
     <string name="widget_msg_no_child">This device is not used by a child right now</string>