diff --git a/elstat/blueprints/api.py b/elstat/blueprints/api.py
index c2083ab..1610894 100644
--- a/elstat/blueprints/api.py
+++ b/elstat/blueprints/api.py
@@ -61,7 +61,7 @@ def calc_uptime(manager):
         # get all polls that failed
         cur.execute(f"""
         SELECT COUNT(*) FROM {name}
-        WHERE status = false
+        WHERE status = 0
         """)
 
         row = cur.fetchone()