diff --git a/api/tacticalrmm/checks/serializers.py b/api/tacticalrmm/checks/serializers.py
index 95052bf5..57538477 100644
--- a/api/tacticalrmm/checks/serializers.py
+++ b/api/tacticalrmm/checks/serializers.py
@@ -37,7 +37,7 @@ class CheckSerializer(serializers.ModelSerializer):
         # disk checks
         # make sure no duplicate diskchecks exist for an agent/policy
         if check_type == "diskspace" and not self.instance:  # only on create
-            checks = Check.objects.filter(**self.context)
+            checks = Check.objects.filter(**self.context).filter(check_type="diskspace")
             if checks:
                 for check in checks:
                     if val["disk"] in check.disk: