diff --git a/t/t7407-submodule-foreach.sh b/t/t7407-submodule-foreach.sh
index 2a527750ce..1f6480a1ae 100755
--- a/t/t7407-submodule-foreach.sh
+++ b/t/t7407-submodule-foreach.sh
@@ -11,6 +11,10 @@ that are currently checked out.
 
 . ./test-lib.sh
 
+case $(uname -s) in
+*MINGW*) GIT_TEST_CMP="diff -uw";;
+esac
+
 
 test_expect_success 'setup a submodule tree' '
 	echo file > file &&