diff --git a/app/src/main/res/layout/overview_fragment_nsclient.xml b/app/src/main/res/layout/overview_fragment_nsclient.xml
index e2de2227ed..bfec8cd179 100644
--- a/app/src/main/res/layout/overview_fragment_nsclient.xml
+++ b/app/src/main/res/layout/overview_fragment_nsclient.xml
@@ -479,7 +479,7 @@
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:layout_gravity="center"
-                    app:buttonTint="@color/prediction" />
+                    android:buttonTint="@color/prediction" />
 
                 <TextView
                     android:id="@+id/overview_showprediction_label"
@@ -496,7 +496,7 @@
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:layout_gravity="center"
-                    app:buttonTint="@color/basal" />
+                    android:buttonTint="@color/basal" />
 
                 <TextView
                     android:id="@+id/overview_showbasals_label"
@@ -513,7 +513,7 @@
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:layout_gravity="center"
-                    app:buttonTint="@color/iob" />
+                    android:buttonTint="@color/iob" />
 
                 <TextView
                     android:id="@+id/overview_showiob_label"
@@ -531,7 +531,7 @@
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:layout_gravity="center"
-                    app:buttonTint="@color/cob" />
+                    android:buttonTint="@color/cob" />
 
                 <TextView
                     android:id="@+id/overview_showcob_label"
@@ -548,7 +548,7 @@
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:layout_gravity="center"
-                    app:buttonTint="@color/deviations" />
+                    android:buttonTint="@color/deviations" />
 
                 <TextView
                     android:id="@+id/overview_showdeviations_label"
diff --git a/app/src/main/res/layout/overview_fragment_nsclient_tablet.xml b/app/src/main/res/layout/overview_fragment_nsclient_tablet.xml
index 639b36d8ce..0b66f79ab2 100644
--- a/app/src/main/res/layout/overview_fragment_nsclient_tablet.xml
+++ b/app/src/main/res/layout/overview_fragment_nsclient_tablet.xml
@@ -563,7 +563,7 @@
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
                         android:layout_gravity="center"
-                        app:buttonTint="@color/prediction" />
+                        android:buttonTint="@color/prediction" />
 
                     <TextView
                         android:id="@+id/overview_showprediction_label"
@@ -580,7 +580,7 @@
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
                         android:layout_gravity="center"
-                        app:buttonTint="@color/basal" />
+                        android:buttonTint="@color/basal" />
 
                     <TextView
                         android:id="@+id/overview_showbasals_label"
@@ -597,7 +597,7 @@
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
                         android:layout_gravity="center"
-                        app:buttonTint="@color/iob" />
+                        android:buttonTint="@color/iob" />
 
                     <TextView
                         android:id="@+id/overview_showiob_label"
@@ -615,7 +615,7 @@
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
                         android:layout_gravity="center"
-                        app:buttonTint="@color/cob" />
+                        android:buttonTint="@color/cob" />
 
                     <TextView
                         android:id="@+id/overview_showcob_label"
@@ -632,7 +632,7 @@
                         android:layout_width="wrap_content"
                         android:layout_height="wrap_content"
                         android:layout_gravity="center"
-                        app:buttonTint="@color/deviations" />
+                        android:buttonTint="@color/deviations" />
 
                     <TextView
                         android:id="@+id/overview_showdeviations_label"
diff --git a/app/src/main/res/layout/overview_fragment_smallheight.xml b/app/src/main/res/layout/overview_fragment_smallheight.xml
index 72a59e4025..019b5740d6 100644
--- a/app/src/main/res/layout/overview_fragment_smallheight.xml
+++ b/app/src/main/res/layout/overview_fragment_smallheight.xml
@@ -245,7 +245,7 @@
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:layout_gravity="center"
-                    app:buttonTint="@color/prediction" />
+                    android:buttonTint="@color/prediction" />
 
                 <TextView
                     android:id="@+id/overview_showprediction_label"
@@ -262,7 +262,7 @@
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:layout_gravity="center"
-                    app:buttonTint="@color/basal" />
+                    android:buttonTint="@color/basal" />
 
                 <TextView
                     android:id="@+id/overview_showbasals_label"
@@ -279,7 +279,7 @@
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:layout_gravity="center"
-                    app:buttonTint="@color/iob" />
+                    android:buttonTint="@color/iob" />
 
                 <TextView
                     android:id="@+id/overview_showiob_label"
@@ -297,7 +297,7 @@
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:layout_gravity="center"
-                    app:buttonTint="@color/cob" />
+                    android:buttonTint="@color/cob" />
 
                 <TextView
                     android:id="@+id/overview_showcob_label"
@@ -314,7 +314,7 @@
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:layout_gravity="center"
-                    app:buttonTint="@color/deviations" />
+                    android:buttonTint="@color/deviations" />
 
                 <TextView
                     android:id="@+id/overview_showdeviations_label"