diff --git a/java/res/values/strings.xml b/java/res/values/strings.xml
index 1f73b159f..11f273df6 100644
--- a/java/res/values/strings.xml
+++ b/java/res/values/strings.xml
@@ -214,11 +214,11 @@
     <string name="label_alt_key">ALT</string>
     <!-- Label for Shift modifier key of symbol keyboard.  Must be short to fit on key! -->
     <string name="label_more_key">More</string>
-    <!-- Label for "Tab" key.  Must be short to fit on key! -->
+    <!-- Label for "Tab" key.  Must be short to fit on key! [CHAR LIMIT=4]-->
     <string name="label_tab_key">Tab</string>
-    <!-- Label for "Pause" key of phone number keyboard.  Must be short to fit on key! -->
+    <!-- Label for "Pause" key of phone number keyboard.  Must be short to fit on key! [CHAR LIMIT=5] -->
     <string name="label_pause_key">Pause</string>
-    <!-- Label for "Wait" key of phone number keyboard.  Must be short to fit on key! -->
+    <!-- Label for "Wait" key of phone number keyboard.  Must be short to fit on key! [CHAR LIMIT=5]-->
     <string name="label_wait_key">Wait</string>
 
     <!-- Voice related labels -->