diff --git a/tests/generic/077 b/tests/generic/077
index 172ce6e7..0d6aec7f 100755
--- a/tests/generic/077
+++ b/tests/generic/077
@@ -32,6 +32,9 @@ status=1
 # Something w/ enough data to fill 50M of fs...
 filler=/lib/modules/
 
+# fall back in case /lib/modules doesn't exist
+[ -d $filler ] || filler=/usr
+
 _cleanup()
 {
 	cd /