diff --git a/cmake/SetupRajaConfig.cmake b/cmake/SetupRajaConfig.cmake
index a330fdd753..34e8f33142 100644
--- a/cmake/SetupRajaConfig.cmake
+++ b/cmake/SetupRajaConfig.cmake
@@ -49,10 +49,10 @@ else ()
     set(RAJA_USE_CLOCK   OFF CACHE BOOL "Use clock from time.h for timer"    )
 endif ()
 
-include(CheckSymbolExists)
-check_symbol_exists(posix_memalign stdlib.h RAJA_HAVE_POSIX_MEMALIGN)
-check_symbol_exists(std::aligned_alloc stdlib.h RAJA_HAVE_ALIGNED_ALLOC)
-check_symbol_exists(_mm_malloc "" RAJA_HAVE_MM_MALLOC)
+include(CheckCXXSymbolExists)
+check_cxx_symbol_exists(posix_memalign cstdlib RAJA_HAVE_POSIX_MEMALIGN)
+check_cxx_symbol_exists(std::aligned_alloc cstdlib RAJA_HAVE_ALIGNED_ALLOC)
+check_cxx_symbol_exists(_mm_malloc cstdlib RAJA_HAVE_MM_MALLOC)
 
 # Set up RAJA_ENABLE prefixed options
 set(RAJA_ENABLE_OPENMP ${ENABLE_OPENMP})