diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1551f0c..2385fc3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -150,7 +150,7 @@
     "Extra flags for CMAKE_EXE_LINKER_FLAGS")
 mark_as_advanced(TEST_SUITE_EXTRA_C_FLAGS, TEST_SUITE_EXTRA_CXX_FLAGS,
                  TEST_SUITE_EXTRA_EXE_LINKER_FLAGS)
-set(CMAKE_C_CFLAGS "${CMAKE_C_CFLAGS} ${TEST_SUITE_EXTRA_C_FLAGS}")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${TEST_SUITE_EXTRA_C_FLAGS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${TEST_SUITE_EXTRA_CXX_FLAGS}")
 set(CMAKE_EXE_LINKER_FLAGS
     "${CMAKE_EXE_LINKER_FLAGS} ${TEST_SUITE_EXTRA_EXE_LINKER_FLAGS}")