diff --git a/MyxCMake/lib/uncrustify/Uncrustify.cmake b/MyxCMake/lib/uncrustify/Uncrustify.cmake
index 233dbbf..84efdde 100644
--- a/MyxCMake/lib/uncrustify/Uncrustify.cmake
+++ b/MyxCMake/lib/uncrustify/Uncrustify.cmake
@@ -9,10 +9,6 @@ function(myx_uncrustify TARGET_NAME)
     set(CMAKE_CURRENT_FUNCTION_LIST_DIR ${MYX_CMAKE_LIB_UNCRUSTIFY_DIR_BACKPORT})
   endif()
 
-  if(NOT ${PROJECT_BINARY_DIR} STREQUAL ${CMAKE_BINARY_DIR})
-    return()
-  endif()
-
   set(options)
   set(oneValueArgs CONFIG)
   set(multiValueArgs)
@@ -32,6 +28,12 @@ function(myx_uncrustify TARGET_NAME)
     return()
   endif()
 
+  get_filename_component(CONFIG_DIR ${ARG_CONFIG} DIRECTORY)
+  if(NOT "${CMAKE_SOURCE_DIR}" STREQUAL "${CONFIG_DIR}")
+    myx_message("MyxCMake: skip uncrustify for project ${PROJECT_NAME}")
+    return()
+  endif()
+
   if(NOT TARGET myx-uncrustify)
     add_custom_target(myx-uncrustify)
   endif()