diff --git a/CMakeLists.txt b/CMakeLists.txt
index fcb50c7..9e7da9b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -170,7 +170,7 @@ set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Werror -pedantic")
 set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -Werror -pedantic")
 
 
-set(LIB_CFLAGS "-std=c++11 -fno-exceptions -fno-rtti -fvisibility=hidden -Wall -Werror=strict-prototypes -Werror=old-style-definition -Werror=missing-prototypes")
+set(LIB_CFLAGS "-std=c++11 -fno-exceptions -fno-rtti -fvisibility=hidden -Wall -Werror=strict-prototypes -Werror=old-style-definition -Werror=missing-prototypes -Wno-c99-extensions")
 set(EXAMPLE_CFLAGS "-std=c99 -Wall")
 set(EXAMPLE_INCLUDES "${CMAKE_SOURCE_DIR}/src")
 set(TEST_CFLAGS "${LIB_CFLAGS} -fprofile-arcs -ftest-coverage")