diff --git a/backend-python/media_impact_monitor/util/env.py b/backend-python/media_impact_monitor/util/env.py
index b27159f..3363b48 100644
--- a/backend-python/media_impact_monitor/util/env.py
+++ b/backend-python/media_impact_monitor/util/env.py
@@ -18,7 +18,7 @@
 DATAFORSEO_PASSWORD = environ["DATAFORSEO_PASSWORD"]
 BUNDESTAG_API_KEY = environ["BUNDESTAG_API_KEY"]
 SENTRY_DSN = environ["SENTRY_DSN"]
-AI_TREND_RESOLUTION = environ.get("AI_TREND_RESOLUTION", 0.01)
+AI_TREND_RESOLUTION = float(environ.get("AI_TREND_RESOLUTION", 0.01))
 
 assert ACLED_EMAIL
 assert ACLED_KEY