diff --git a/cmake/PackageBundle.cmake b/cmake/PackageBundle.cmake
index 6d0085a32a..a443da3c4b 100644
--- a/cmake/PackageBundle.cmake
+++ b/cmake/PackageBundle.cmake
@@ -18,6 +18,7 @@ install(
     CODE
     "
         include(BundleUtilities)
+        set(BU_CHMOD_BUNDLE_ITEMS TRUE)
         fixup_bundle(\"\${CMAKE_INSTALL_PREFIX}/openttd\"  \"\" \"\")
     "
     DESTINATION .