diff --git a/Toolset/palettes/standalone settings/revstandalonesettingsbehavior.livecodescript b/Toolset/palettes/standalone settings/revstandalonesettingsbehavior.livecodescript
index f1b398a022..b5344f5422 100644
--- a/Toolset/palettes/standalone settings/revstandalonesettingsbehavior.livecodescript	
+++ b/Toolset/palettes/standalone settings/revstandalonesettingsbehavior.livecodescript	
@@ -221,16 +221,7 @@ function getImageDimensions pImageFile
 end getImageDimensions
 
 function validateIdentifier pIdentifier
-   local tValid
-   
-   put true into tValid
-   set the itemDelimiter to "."
-   repeat for each item tItem in pIdentifier 
-      if tItem is a number then
-         put false into tValid
-      end if
-   end repeat
-   return tValid
+   return matchText(pIdentifier, "(?i)^[a-z][a-z0-9_]*(\.[a-z][a-z0-9_]*)+$")
 end validateIdentifier
 
 on revUpdateStandaloneProgress pMessage
diff --git a/notes/bugfix-15157.md b/notes/bugfix-15157.md
new file mode 100644
index 0000000000..9003c75ba7
--- /dev/null
+++ b/notes/bugfix-15157.md
@@ -0,0 +1 @@
+# Ensure Android app identifier is valid