diff --git a/components/libc/compilers/armlibc/libc.h b/components/libc/compilers/armlibc/libc.h
index 5e9f68218d..aef0324018 100644
--- a/components/libc/compilers/armlibc/libc.h
+++ b/components/libc/compilers/armlibc/libc.h
@@ -32,6 +32,6 @@ int libc_system_init(void);
 
 int libc_stdio_set_console(const char* device_name, int mode);
 int libc_stdio_read (void *buffer, size_t size);
-int libc_stdio_write(void *buffer, size_t size);
+int libc_stdio_write(const void *buffer, size_t size);
 
 #endif
diff --git a/components/libc/compilers/armlibc/stdio.c b/components/libc/compilers/armlibc/stdio.c
index 8c9c99b3ad..cba51beb18 100644
--- a/components/libc/compilers/armlibc/stdio.c
+++ b/components/libc/compilers/armlibc/stdio.c
@@ -63,7 +63,7 @@ int libc_stdio_read(void *buffer, size_t size)
     return read(std_fd, buffer, size);
 }
 
-int libc_stdio_write(void *buffer, size_t size)
+int libc_stdio_write(const void *buffer, size_t size)
 {
     return write(std_fd, buffer, size);
 }
diff --git a/components/libc/compilers/armlibc/stubs.c b/components/libc/compilers/armlibc/stubs.c
index 0de8aacb3c..719665b78e 100644
--- a/components/libc/compilers/armlibc/stubs.c
+++ b/components/libc/compilers/armlibc/stubs.c
@@ -31,6 +31,7 @@
 #include <rt_sys.h>
 
 #include "rtthread.h"
+#include "libc.h"
 
 #ifdef RT_USING_DFS
 #include "dfs_posix.h"