diff --git a/cmake/libutils.cmake b/cmake/libutils.cmake
index e4b4e980b00..ff74809d224 100644
--- a/cmake/libutils.cmake
+++ b/cmake/libutils.cmake
@@ -220,7 +220,7 @@ MACRO(MERGE_LIBRARIES)
   SET(LIBS ${ARG_DEFAULT_ARGS})
   LIST(REMOVE_AT LIBS 0)
   IF(ARG_STATIC)
-    IF (NOT "${ARG_OUTPUT_NAME}")
+    IF (NOT ARG_OUTPUT_NAME)
       SET(ARG_OUTPUT_NAME ${TARGET})
     ENDIF()
     MERGE_STATIC_LIBS(${TARGET} ${ARG_OUTPUT_NAME} "${LIBS}")