diff --git a/src/testdir/Makefile b/src/testdir/Makefile
index 9901642db86aafaaf199472b6caed37465f8de63..dc3dccb9640828c12a59e466bf47b9383dd35b48 100644
--- a/src/testdir/Makefile
+++ b/src/testdir/Makefile
@@ -46,7 +46,7 @@ test1.out: test1.in
 	-rm -rf X* viminfo
 
 .in.out:
-	-rm -f $*.failed test.ok X*
+	-rm -f $*.failed test.ok X* viminfo
 	cp $*.ok test.ok
 	# Sleep a moment to avoid that the xterm title is messed up
 	@-sleep .2