diff --git a/playground/Demo1/Main.snow b/playground/Demo1/Main.snow
index 89efc03..9058208 100644
--- a/playground/Demo1/Main.snow
+++ b/playground/Demo1/Main.snow
@@ -1,9 +1,10 @@
 module: Main
     import:Math
     function: main
-        return_type: void
+        return_type: int
         body:
             Math.add(6,1)
+            return 0
         end body
     end function
-end module
+end module
\ No newline at end of file