diff --git a/t/t7401-submodule-summary.sh b/t/t7401-submodule-summary.sh
index d2d6d5be25..50030c1a49 100755
--- a/t/t7401-submodule-summary.sh
+++ b/t/t7401-submodule-summary.sh
@@ -14,6 +14,8 @@ esac
 
 . ./test-lib.sh
 
+export GIT_TEST_CMP='diff -u -b' # some lines end in CRLF
+
 add_file () {
 	sm=$1
 	shift