diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4f53960e..d748cb42 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -82,7 +82,7 @@ if(CMAKE_COMPILER_IS_GNUCC)
 endif()
 
 if(CMAKE_C_COMPILER_ID MATCHES "Clang")
-  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Werror=declaration-after-statement -std=c89 -Wno-comment")
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Werror=declaration-after-statement -Wno-comment")
 endif()
 
 #options suported by the cmake builder