diff --git a/app/src/main/res/layout/activity_source_sub.xml b/app/src/main/res/layout/activity_source_sub.xml
index 3072b276b..da225e714 100644
--- a/app/src/main/res/layout/activity_source_sub.xml
+++ b/app/src/main/res/layout/activity_source_sub.xml
@@ -28,6 +28,7 @@
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_margin="16dp"
+            android:layout_gravity="center"
             android:gravity="center"
             android:visibility="gone"
             android:text="@string/source_sub_empty_msg"