diff --git a/CMakeLists.txt b/CMakeLists.txt
index aa2118d35..544a8650e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -893,7 +893,7 @@ set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -fexceptions -frtti")
 if (NOT APPLE)
   set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-pragmas")
   if (${OPENMP_FOUND})
-    if (OpenMP_C_CLAGS})
+    if (OpenMP_C_FLAGS)
       set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_C_FLAGS}")
       set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
     endif ()