diff --git a/t/t5503-tagfollow.sh b/t/t5503-tagfollow.sh
index b6b1fc30cd..aa0ada0147 100755
--- a/t/t5503-tagfollow.sh
+++ b/t/t5503-tagfollow.sh
@@ -4,7 +4,7 @@ test_description='test automatic tag following'
 
 . ./test-lib.sh
 
-if !test_have_prereq NOT_MINGW; then
+if ! test_have_prereq NOT_MINGW; then
 	say "GIT_DEBUG_SEND_PACK not supported - skipping tests"
 fi