diff --git a/t/t0050-filesystem.sh b/t/t0050-filesystem.sh
index ccd685dc1..a6fa3c543 100755
--- a/t/t0050-filesystem.sh
+++ b/t/t0050-filesystem.sh
@@ -88,7 +88,7 @@ test_expect_success 'merge (case change)' '
 
 
 
-test_expect_failure 'add (with different case)' '
+test_expect_failure CASE_INSENSITIVE_FS 'add (with different case)' '
 
 	git reset --hard initial &&
 	rm camelcase &&