diff --git a/rest_framework/schemas/openapi.py b/rest_framework/schemas/openapi.py
index 9b3082822..a77d30b48 100644
--- a/rest_framework/schemas/openapi.py
+++ b/rest_framework/schemas/openapi.py
@@ -364,7 +364,7 @@ class AutoSchema(ViewInspector):
         if isinstance(field, serializers.ListSerializer):
             return {
                 'type': 'array',
-                'items': self.map_serializer(field.child)
+                'items': self.map_field(field.child)
             }
         if isinstance(field, serializers.Serializer):
             data = self.map_serializer(field)