diff --git a/CMakeLists.txt b/CMakeLists.txt
index 20fd35e6b9..f2f8f65ce0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -367,7 +367,7 @@ mark_as_superbuild(ADDITIONAL_CXX_FLAGS)
 #
 mark_as_superbuild(VARS
   CMAKE_EXE_LINKER_FLAGS:STRING
-  CMAKE_MODULE_LINKER_FLAGS:PATH
+  CMAKE_MODULE_LINKER_FLAGS:STRING
   CMAKE_SHARED_LINKER_FLAGS:STRING
   ALL_PROJECTS
 )