diff --git a/api/datalake_api/app.py b/api/datalake_api/app.py
index 26219f2..4e792f2 100644
--- a/api/datalake_api/app.py
+++ b/api/datalake_api/app.py
@@ -41,7 +41,7 @@
 
 dsn = os.environ.get("SENTRY_DSN")
 traces_sample_rate = \
-    float(os.environ.get("SENTRY_TRACES_SAMPLE_RATE"), None)
+    float(os.environ.get("SENTRY_TRACES_SAMPLE_RATE", None))
 sentry_sdk.init(dsn=dsn,
                 integrations=[FlaskIntegration()],
                 traces_sample_rate=traces_sample_rate)