diff --git a/workers/globalpromstats.py b/workers/globalpromstats.py
index 3264f8338..ae4f43f27 100644
--- a/workers/globalpromstats.py
+++ b/workers/globalpromstats.py
@@ -45,10 +45,10 @@ class GlobalPrometheusStatsWorker(Worker):
 
       if features.SECURITY_SCANNER:
         # Clair repo counts.
-        unscanned_images_gauge.set(
+        unscanned_images_gauge.Set(
           get_count_of_images_eligible_for_scan(app.config.get('SECURITY_SCANNER_ENGINE_VERSION_TARGET', 2))
         )
-        images_gauge.set(total_image_count())
+        images_gauge.Set(total_image_count())
 
 
 def main():