diff --git a/vp9/encoder/vp9_firstpass.c b/vp9/encoder/vp9_firstpass.c
index 71a8cefe6..0acda25ad 100644
--- a/vp9/encoder/vp9_firstpass.c
+++ b/vp9/encoder/vp9_firstpass.c
@@ -780,7 +780,7 @@ void vp9_first_pass(VP9_COMP *cpi) {
     else
       recon_file = fopen(filename, "ab");
 
-    if (fwrite(lst_yv12->buffer_alloc, lst_yv12->frame_size, 1, recon_file));
+    (void)fwrite(lst_yv12->buffer_alloc, lst_yv12->frame_size, 1, recon_file);
     fclose(recon_file);
   }