diff --git a/graphene_django/filter/tests/test_in_filter.py b/graphene_django/filter/tests/test_in_filter.py
index 9e9c32378..ac3dddd38 100644
--- a/graphene_django/filter/tests/test_in_filter.py
+++ b/graphene_django/filter/tests/test_in_filter.py
@@ -33,12 +33,7 @@ class Meta:
 class PersonFilterSet(FilterSet):
     class Meta:
         model = Person
-        fields = {}
-
-    names = filters.BaseInFilter(method="filter_names")
-
-    def filter_names(self, qs, name, value):
-        return qs.filter(name__in=value)
+        fields = {"name": ["in"]}
 
 
 class PersonNode(DjangoObjectType):
@@ -92,7 +87,7 @@ def test_string_in_filter_with_filterset_class():
 
     query = """
     query {
-        people (names: ["John", "Michael"]) {
+        people (name_In: ["John", "Michael"]) {
             edges {
                 node {
                     name
diff --git a/graphene_django/filter/utils.py b/graphene_django/filter/utils.py
index 4530599e5..0737432eb 100644
--- a/graphene_django/filter/utils.py
+++ b/graphene_django/filter/utils.py
@@ -79,6 +79,8 @@ def replace_csv_filters(filterset_class):
     """
     for name, filter_field in list(filterset_class.base_filters.items()):
         filter_type = filter_field.lookup_expr
+        if name in filterset_class.declared_filters:
+            continue
         if filter_type in {"in", "contains", "overlap"}:
             filterset_class.base_filters[name] = InFilter(
                 field_name=filter_field.field_name,