diff --git a/include/ruby/ruby.h b/include/ruby/ruby.h
index 7e8532485e..fbc71ddd01 100644
--- a/include/ruby/ruby.h
+++ b/include/ruby/ruby.h
@@ -2155,13 +2155,8 @@ int ruby_vsnprintf(char *str, size_t n, char const *fmt, va_list ap);
     __builtin_choose_expr(__builtin_constant_p(fmt), \
         rb_scan_args0(argc,argv,fmt,(sizeof((VALUE*[]){__VA_ARGS__})/sizeof(VALUE*)),(VALUE*[]){__VA_ARGS__}), \
         rb_scan_args(argc,argvp,fmt,__VA_ARGS__))
-# if GCC_VERSION_SINCE(4, 4, 0)
-void rb_scan_args_bad_format(const char*) __attribute__((error("bad scan arg format")));
-void rb_scan_args_length_mismatch(int, int) __attribute__((error("variable argument length doesn't match")));
-# else
 #   define rb_scan_args_bad_format(fmt) rb_fatal("bad scan arg format: %s", fmt)
 #   define rb_scan_args_length_mismatch(vari, varc) rb_fatal("variable argument length doesn't match: %d %d", vari, varc)
-# endif
 
 ALWAYS_INLINE(static int
 rb_scan_args0(int argc, const VALUE *argv, const char *fmt, int varc, VALUE *vars[]));