diff --git a/selfprivacy_api/utils/prometheus.py b/selfprivacy_api/utils/prometheus.py
index 2248170..3e25a2d 100644
--- a/selfprivacy_api/utils/prometheus.py
+++ b/selfprivacy_api/utils/prometheus.py
@@ -37,7 +37,7 @@ class PrometheusQueries:
                 raise Exception("Prometheus returned unexpected HTTP status code")
             json = response.json()
             return PrometheusQueryResult(
-                result_type=json["resultType"], result=json["result"]
+                result_type=json["result_type"], result=json["result"]
             )
         except Exception as error:
             raise Exception("Prometheus request failed! " + str(error))