1 files changed, 1 insertions, 1 deletions
diff --git a/libio/fileno.c b/libio/fileno.c
index 8f678ad2aa..f49c588a96 100644
--- a/libio/fileno.c
+++ b/libio/fileno.c
@@ -28,7 +28,7 @@
 #include <stdio.h>
 
 int
-__fileno (_IO_FILE *fp)
+__fileno (FILE *fp)
 {
   CHECK_FILE (fp, EOF);