1 files changed, 3 insertions, 1 deletions

diff --git a/apps/plugins/lua/rocklibc.h b/apps/plugins/lua/rocklibc.h
index 44f916fded..430889bb70 100644
--- a/apps/plugins/lua/rocklibc.h
+++ b/apps/plugins/lua/rocklibc.h
@@ -30,6 +30,7 @@
 #include <errno.h>
 #define PREFIX(_x_) sim_ ## _x_
 #else
+#undef errno
 extern int errno;
 #define EINVAL          22      /* Invalid argument */
 #define ERANGE          34      /* Math result not representable */
@@ -43,7 +44,8 @@ extern int errno;
 #define memcmp rb->memcmp
 #define strlen rb->strlen
 
-extern int PREFIX(fscanf)(int fd, const char *fmt, ...);
+extern int PREFIX(fscanf)(void *fd, const char *fmt, ...);
+extern int PREFIX(getc)(int fd);
 
 #endif /* _ROCKLIBC_H_ */