diff --git a/Corona-Warn-App/src/main/res/layout/contact_diary_onboarding_fragment.xml b/Corona-Warn-App/src/main/res/layout/contact_diary_onboarding_fragment.xml
index b8f309edac382f63584db33eeda941747be6146c..adc913469827105ff694c19c1dfbd907e09b2c23 100644
--- a/Corona-Warn-App/src/main/res/layout/contact_diary_onboarding_fragment.xml
+++ b/Corona-Warn-App/src/main/res/layout/contact_diary_onboarding_fragment.xml
@@ -211,7 +211,7 @@
 
         </ScrollView>
 
-        <Button
+        <android.widget.Button
             android:id="@+id/contact_diary_onboarding_next_button"
             style="@style/buttonPrimary"
             android:layout_width="@dimen/match_constraint"
diff --git a/Corona-Warn-App/src/main/res/layout/contact_diary_person_bottom_sheet_fragment.xml b/Corona-Warn-App/src/main/res/layout/contact_diary_person_bottom_sheet_fragment.xml
index 14689625492c44dc18e311ade978a063343ceaf0..41550f17918a69e5a3360bdc665ee66ff5bd98e8 100644
--- a/Corona-Warn-App/src/main/res/layout/contact_diary_person_bottom_sheet_fragment.xml
+++ b/Corona-Warn-App/src/main/res/layout/contact_diary_person_bottom_sheet_fragment.xml
@@ -63,7 +63,7 @@
 
         </com.google.android.material.textfield.TextInputLayout>
 
-        <Button
+        <android.widget.Button
             android:id="@+id/contact_diary_person_bottom_sheet_save_button"
             style="@style/buttonPrimary"
             android:layout_width="@dimen/match_constraint"