diff --git a/src/osx/carbon/msgdlg.cpp b/src/osx/carbon/msgdlg.cpp
index 29a23d18f1..d7d024529c 100644
--- a/src/osx/carbon/msgdlg.cpp
+++ b/src/osx/carbon/msgdlg.cpp
@@ -247,6 +247,8 @@ int wxMessageDialog::ShowModal()
             }
         }
     }
+    
+    SetReturnCode(resultbutton);
 
     return resultbutton;
 }