diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index b87043c4..9c4cebf9 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -370,7 +370,7 @@
     <string name="video_fps">Video Frames Per Second</string>
     <string name="video_fps_help">Video frame rate that will be offered during the SDP handshake.
         Valid values are from 10 to 30.</string>
-    <string name="invalid_fps">Invalid Frames Per Second \'%1$s\'</string>
+    <string name="invalid_fps">Invalid Frames Per Second \'%1$d\'</string>
     <string name="contacts_help">Chooses if baresip contacts, Android contacts, or both are used. If both are used and a contact with the same name exists in both contacts, the baresip contact will be chosen.</string>
     <string name="both">Both</string>
     <string name="debug">Debug</string>