diff --git a/cmake/QtPublicCMakeHelpers.cmake b/cmake/QtPublicCMakeHelpers.cmake
index ac669bfa6c6..7ba9f6f6ad1 100644
--- a/cmake/QtPublicCMakeHelpers.cmake
+++ b/cmake/QtPublicCMakeHelpers.cmake
@@ -153,7 +153,7 @@ function(__qt_internal_collect_additional_module_paths)
         if(is_path_to_cmake)
             list(APPEND CMAKE_MODULE_PATH "${prefix_path}/${QT_CMAKE_EXPORT_NAMESPACE}")
         else()
-            __qt_internal_get_possible_cmake_dirs(additional_cmake_dirs "${additional_path}")
+            __qt_internal_get_possible_cmake_dirs(additional_cmake_dirs "${prefix_path}")
             list(TRANSFORM additional_cmake_dirs APPEND "/${QT_CMAKE_EXPORT_NAMESPACE}")
             list(APPEND CMAKE_MODULE_PATH ${additional_cmake_dirs})
         endif()