diff --git a/usr.bin/diff/diffreg.c b/usr.bin/diff/diffreg.c
index 4e887ab27c7..a8d668ea098 100644
--- a/usr.bin/diff/diffreg.c
+++ b/usr.bin/diff/diffreg.c
@@ -491,7 +491,6 @@ opentemp(const char *f)
 		}
 	}
 	close(ifd);
-	lseek(ofd, (off_t)0, SEEK_SET);
 	return (fdopen(ofd, "r"));
 }