diff --git a/fsck.c b/fsck.c
index 9339f31513..c472856527 100644
--- a/fsck.c
+++ b/fsck.c
@@ -64,6 +64,7 @@ static struct oidset gitmodules_done = OIDSET_INIT;
 	FUNC(GITMODULES_PARSE, ERROR) \
 	FUNC(GITMODULES_NAME, ERROR) \
 	FUNC(GITMODULES_SYMLINK, ERROR) \
+	FUNC(GITMODULES_URL, ERROR) \
 	/* warnings */ \
 	FUNC(BAD_FILEMODE, WARN) \
 	FUNC(EMPTY_NAME, WARN) \
@@ -945,6 +946,12 @@ static int fsck_gitmodules_fn(const char *var, const char *value, void *vdata)
 				    FSCK_MSG_GITMODULES_NAME,
 				    "disallowed submodule name: %s",
 				    name);
+	if (!strcmp(key, "url") && value &&
+	    looks_like_command_line_option(value))
+		data->ret |= report(data->options, data->obj,
+				    FSCK_MSG_GITMODULES_URL,
+				    "disallowed submodule url: %s",
+				    value);
 	free(name);
 
 	return 0;
diff --git a/t/t7416-submodule-dash-url.sh b/t/t7416-submodule-dash-url.sh
index 459193c976..1cd2c1c1ea 100755
--- a/t/t7416-submodule-dash-url.sh
+++ b/t/t7416-submodule-dash-url.sh
@@ -20,6 +20,13 @@ test_expect_success 'clone can recurse submodule' '
 	test_cmp expect actual
 '
 
+test_expect_success 'fsck accepts protected dash' '
+	test_when_finished "rm -rf dst" &&
+	git init --bare dst &&
+	git -C dst config transfer.fsckObjects true &&
+	git push dst HEAD
+'
+
 test_expect_success 'remove ./ protection from .gitmodules url' '
 	perl -i -pe "s{\./}{}" .gitmodules &&
 	git commit -am "drop protection"
@@ -31,4 +38,12 @@ test_expect_success 'clone rejects unprotected dash' '
 	test_i18ngrep ignoring err
 '
 
+test_expect_success 'fsck rejects unprotected dash' '
+	test_when_finished "rm -rf dst" &&
+	git init --bare dst &&
+	git -C dst config transfer.fsckObjects true &&
+	test_must_fail git push dst HEAD 2>err &&
+	grep gitmodulesUrl err
+'
+
 test_done