diff --git a/src/stdio/putw.c b/src/stdio/putw.c
index a6d2429278a67f3df5061c041fc113b1fd2d350e..0ff9d7fbffb98a5d5919a3e8658678095674a3b7 100644
--- a/src/stdio/putw.c
+++ b/src/stdio/putw.c
@@ -3,5 +3,5 @@
 
 int putw(int x, FILE *f)
 {
-	return fwrite(&x, sizeof x, 1, f) ? x : EOF;
+	return (int)fwrite(&x, sizeof x, 1, f)-1;
 }