diff --git a/components/libc/compilers/minilibc/sys/types.h b/components/libc/compilers/minilibc/sys/types.h
index d3abc6bb38..746235273c 100644
--- a/components/libc/compilers/minilibc/sys/types.h
+++ b/components/libc/compilers/minilibc/sys/types.h
@@ -25,8 +25,6 @@ typedef unsigned short u_short;
 typedef unsigned int   u_int;
 typedef unsigned long  u_long;
 
-typedef int mode_t;
-
 typedef unsigned long clockid_t;
 typedef int pid_t;