diff --git a/openmp/cmake/HandleOpenMPOptions.cmake b/openmp/cmake/HandleOpenMPOptions.cmake
index 4d6782a6f0cbe..a79b04e005756 100644
--- a/openmp/cmake/HandleOpenMPOptions.cmake
+++ b/openmp/cmake/HandleOpenMPOptions.cmake
@@ -1,4 +1,4 @@
-if (OPENMP_STANDALONE_BUILD)
+if (NOT COMMAND append_if)
   # From HandleLLVMOptions.cmake
   function(append_if condition value)
     if (${condition})