diff --git a/src/iosanita/policy/restapi/services/search_tassonomie/get.py b/src/iosanita/policy/restapi/services/search_tassonomie/get.py
index e84ef76..a33cc10 100644
--- a/src/iosanita/policy/restapi/services/search_tassonomie/get.py
+++ b/src/iosanita/policy/restapi/services/search_tassonomie/get.py
@@ -48,9 +48,9 @@ def reply(self):
 
         # add standard query filters
         for query_index in BASE_FILTERS:
-            value = self.request.form.get(query_index, "")
-            if value:
-                query[query_index] = value
+            value_index = self.request.form.get(query_index, "")
+            if value_index:
+                query[query_index] = value_index
 
         # then filter by taxonomy
         all_values = pc.uniqueValuesFor(index)