diff --git a/cmake/QtModuleHelpers.cmake b/cmake/QtModuleHelpers.cmake
index 703ddde21b0..853adbd3ac0 100644
--- a/cmake/QtModuleHelpers.cmake
+++ b/cmake/QtModuleHelpers.cmake
@@ -142,6 +142,9 @@ function(qt_internal_add_module target)
         set(property_prefix "")
     endif()
 
+    if(arg_INTERNAL_MODULE)
+        string(APPEND arg_CONFIG_MODULE_NAME "_private")
+    endif()
     set_target_properties(${target} PROPERTIES
         _qt_config_module_name "${arg_CONFIG_MODULE_NAME}"
         ${property_prefix}QT_QMAKE_MODULE_CONFIG "${arg_QMAKE_MODULE_CONFIG}")
diff --git a/cmake/QtPriHelpers.cmake b/cmake/QtPriHelpers.cmake
index daeb62ff8f8..599ccb8c4d4 100644
--- a/cmake/QtPriHelpers.cmake
+++ b/cmake/QtPriHelpers.cmake
@@ -246,7 +246,6 @@ ${framework_base_path}/${fw_private_module_header_dir}")
     set(config_module_name_base "${config_module_name}")
 
     if (arg_INTERNAL_MODULE)
-        string(APPEND config_module_name "_private")
         # Internal module pri needs to provide private headers
         set(public_module_includes "${private_module_includes}")
     endif()