1 files changed, 1 insertions, 0 deletions

diff --git a/include/stdio.h b/include/stdio.h
index 279160912ba9..e392bd5eb3e2 100644
--- a/include/stdio.h
+++ b/include/stdio.h
@@ -348,6 +348,7 @@ int	 feof_unlocked(FILE *);
 int	 ferror_unlocked(FILE *);
 int	 fflush_unlocked(FILE *);
 int	 fileno_unlocked(FILE *);
+int	 fputc_unlocked(int, FILE *);
 int	 fputs_unlocked(const char * __restrict, FILE * __restrict);
 size_t	 fread_unlocked(void * __restrict, size_t, size_t, FILE * __restrict);
 size_t	 fwrite_unlocked(const void * __restrict, size_t, size_t,