diff --git a/akvo/rest/filters.py b/akvo/rest/filters.py
index a1a3ad3b02..885f97916a 100644
--- a/akvo/rest/filters.py
+++ b/akvo/rest/filters.py
@@ -66,7 +66,7 @@ def eval_query_value(request, key):
                         queryset = getattr(queryset, param)(*args_or_kwargs)
 
                 except FieldError as e:
-                    raise APIException("Error in request. Error msg:\n {message}".format(message=e.message))
+                    raise APIException("Error in request: {message}".format(message=e.message))
 
         # support for Q expressions, limited to OR-concatenated filtering
         if request.QUERY_PARAMS.get('q_filter1', None):