diff --git a/ref-filter.c b/ref-filter.c
index 05a6291..2dc046f 100644
--- a/ref-filter.c
+++ b/ref-filter.c
@@ -2141,7 +2141,7 @@ static int cmp_ref_sorting(struct ref_sorting *s, struct ref_array_item *a, stru
 		if (va->value < vb->value)
 			cmp = -1;
 		else if (va->value == vb->value)
-			cmp = cmp_fn(a->refname, b->refname);
+			cmp = 0;
 		else
 			cmp = 1;
 	}
@@ -2160,7 +2160,10 @@ static int compare_refs(const void *a_, const void *b_, void *ref_sorting)
 		if (cmp)
 			return cmp;
 	}
-	return 0;
+	s = ref_sorting;
+	return s && s->ignore_case ?
+		strcasecmp(a->refname, b->refname) :
+		strcmp(a->refname, b->refname);
 }
 
 void ref_sorting_icase_all(struct ref_sorting *sorting, int flag)