diff --git a/companion/src/CMakeLists.txt b/companion/src/CMakeLists.txt
index 3cf15d85f..ad023d67d 100644
--- a/companion/src/CMakeLists.txt
+++ b/companion/src/CMakeLists.txt
@@ -513,6 +513,8 @@ IF(APPLE)
   # Use a non standard Info.plist that adds Retina support flags
   set_target_properties(${COMPANION_NAME} PROPERTIES MACOSX_BUNDLE_INFO_PLIST ${PROJECT_SOURCE_DIR}/companion/targets/mac/MacOSXBundleInfo.plist.in)
   set_target_properties(${SIMULATOR_NAME} PROPERTIES MACOSX_BUNDLE_INFO_PLIST ${PROJECT_SOURCE_DIR}/companion/targets/mac/MacOSXBundleInfo.plist.in)
+  
+  set(MACOSX_BUNDLE_GUI_IDENTIFIER "org.opentx.companion")
 
   INSTALL(TARGETS ${COMPANION_NAME}
       BUNDLE DESTINATION . COMPONENT Runtime