diff --git a/mula/scheduler/server/handlers/tasks.py b/mula/scheduler/server/handlers/tasks.py
index db3391dc2d6..6912e7023ab 100644
--- a/mula/scheduler/server/handlers/tasks.py
+++ b/mula/scheduler/server/handlers/tasks.py
@@ -139,12 +139,16 @@ def list(
                     ]
                 }
             elif task_type == "normalizer":
-                f_plugin = storage.filters.Filter(
-                    column="data",
-                    field="normalizer__id",
-                    operator="eq",
-                    value=plugin_id,
-                )
+                f_plugin = {
+                    "and": [
+                        storage.filters.Filter(
+                            column="data",
+                            field="normalizer__id",
+                            operator="eq",
+                            value=plugin_id,
+                        )
+                    ]
+                }
             else:
                 f_plugin = {
                     "or": [
@@ -182,6 +186,7 @@ def list(
                 detail=f"invalid filter(s) [exception: {exc}]",
             ) from exc
         except storage.errors.StorageError as exc:
+            self.logger.exception(exc)
             raise fastapi.HTTPException(
                 status_code=fastapi.status.HTTP_500_INTERNAL_SERVER_ERROR,
                 detail=f"error occurred while accessing the database [exception: {exc}]",
diff --git a/mula/tests/integration/test_api.py b/mula/tests/integration/test_api.py
index 0511c200f52..9f6440c5801 100644
--- a/mula/tests/integration/test_api.py
+++ b/mula/tests/integration/test_api.py
@@ -706,6 +706,13 @@ def test_get_tasks_min_created_at_future(self):
         self.assertEqual(200, response.status_code)
         self.assertEqual(0, len(response.json()["results"]))
 
+    def test_get_normalizer_filtered(self):
+        # This used to be a bug where the normalizer filter was missing a nesting on the operator
+        params = {"task_type": "normalizer", "plugin_id": "kat_nmap_normalize"}
+        response = self.client.get("/tasks", params=params)
+        self.assertEqual(200, response.status_code)
+        self.assertEqual(0, len(response.json()["results"]))
+
     def test_get_tasks_filtered(self):
         response = self.client.post(
             "/tasks",