diff --git a/java/res/values/strings.xml b/java/res/values/strings.xml
index 17b6d87..bd17bd2 100644
--- a/java/res/values/strings.xml
+++ b/java/res/values/strings.xml
@@ -218,9 +218,9 @@
     <string name="label_done_key">Done</string>
     <!-- Label for soft enter key when it performs SEND action.  Must be short to fit on key! -->
     <string name="label_send_key">Send</string>
-    <!-- Label for "switch to symbols" key.  Must be short to fit on key! -->
+    <!-- Label for "switch to symbols" key.  Must be short to fit on key! [CHAR LIMIT=4] -->
     <string name="label_to_symbol_key">\?123</string>
-    <!-- Label for "switch to numeric" key.  Must be short to fit on key! -->
+    <!-- Label for "switch to numeric" key.  Must be short to fit on key! [CHAR LIMIT=4] -->
     <string name="label_phone_key">123</string>
     <!-- Label for "switch to alphabetic" key.  Must be short to fit on key! -->
     <string name="label_to_alpha_key">ABC</string>