diff --git a/awx/api/serializers.py b/awx/api/serializers.py
index 42c36e7d53..349185fff1 100644
--- a/awx/api/serializers.py
+++ b/awx/api/serializers.py
@@ -1024,13 +1024,6 @@ class InventorySourceOptionsSerializer(BaseSerializer):
         # FIXME
         return attrs
 
-    def validate_credential(self, attrs, source):
-        src = attrs.get('source', '')
-        if src in CLOUD_PROVIDERS:
-            if attrs.get(source, None) is None:
-                raise serializers.ValidationError("Credential is required for Cloud source types")
-        return attrs
-
     def validate_source_script(self, attrs, source):
         src = attrs.get(source, None)
         if 'source' in attrs and attrs.get('source', '') == 'custom':