diff --git a/java/res/xml/key_styles_number.xml b/java/res/xml/key_styles_number.xml
index 97ae6c6c3..847b43610 100644
--- a/java/res/xml/key_styles_number.xml
+++ b/java/res/xml/key_styles_number.xml
@@ -44,6 +44,7 @@
     <key-style
         latin:styleName="num0KeyStyle"
         latin:keySpec="0"
+        latin:keyHintLabel="+"
         latin:parentStyle="numberKeyStyle" />
     <key-style
         latin:styleName="num1KeyStyle"