diff --git a/OpenKeychain/src/main/res/layout/decrypt_activity.xml b/OpenKeychain/src/main/res/layout/decrypt_activity.xml
index 94d82fe1d..bb0e463b3 100644
--- a/OpenKeychain/src/main/res/layout/decrypt_activity.xml
+++ b/OpenKeychain/src/main/res/layout/decrypt_activity.xml
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <android.support.v4.widget.FixedDrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:bootstrapbutton="http://schemas.android.com/apk/res-auto"
     android:id="@+id/drawer_layout"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
@@ -9,4 +8,4 @@
 
     <include layout="@layout/drawer_list" />
 
-</android.support.v4.widget.FixedDrawerLayout>
\ No newline at end of file
+</android.support.v4.widget.FixedDrawerLayout>
diff --git a/OpenKeychain/src/main/res/layout/decrypt_message_fragment.xml b/OpenKeychain/src/main/res/layout/decrypt_message_fragment.xml
index 4ac60620d..3b4eba3ef 100644
--- a/OpenKeychain/src/main/res/layout/decrypt_message_fragment.xml
+++ b/OpenKeychain/src/main/res/layout/decrypt_message_fragment.xml
@@ -1,6 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:bootstrapbutton="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:fillViewport="true">