diff --git a/mkspecs/features/cmake_functions.prf b/mkspecs/features/cmake_functions.prf
index 2dc72a7a2f..fac73b464c 100644
--- a/mkspecs/features/cmake_functions.prf
+++ b/mkspecs/features/cmake_functions.prf
@@ -29,7 +29,7 @@ defineReplace(cmakeTargetPath) {
     SYSR = $$[QT_SYSROOT]
     !isEmpty(SYSR): path = $$relative_path($$1, $$[QT_SYSROOT])
     else: path = $$1
-    return(/$$path)
+    return($$clean_path(/$$path))
 }
 
 defineReplace(cmakeTargetPaths) {