diff --git a/cmake/compiler/clang/settings.cmake b/cmake/compiler/clang/settings.cmake
index ddfc0baa9a..31865c67d6 100644
--- a/cmake/compiler/clang/settings.cmake
+++ b/cmake/compiler/clang/settings.cmake
@@ -1,3 +1,5 @@
+include(CheckCXXSourceCompiles)
+
 # Set build-directive (used in core to tell which buildtype we used)
 target_compile_definitions(trinity-compile-option-interface
   INTERFACE