diff --git a/compiler-rt/test/CMakeLists.txt b/compiler-rt/test/CMakeLists.txt
index 68f5066fa8c5..1d123ed8cfb7 100644
--- a/compiler-rt/test/CMakeLists.txt
+++ b/compiler-rt/test/CMakeLists.txt
@@ -29,7 +29,7 @@ if(NOT ANDROID)
   endif()
   # Tests use C++ standard library headers.
   if (TARGET cxx-headers OR HAVE_LIBCXX)
-    set(SANITIZER_COMMON_LIT_TEST_DEPS cxx-headers)
+    list(APPEND SANITIZER_COMMON_LIT_TEST_DEPS cxx-headers)
   endif()
 endif()