diff --git a/run-queue b/run-queue
index c0fa4d8da..729aeb6d4 100755
--- a/run-queue
+++ b/run-queue
@@ -77,7 +77,7 @@ def consume_webhook_queue(dq: distributed_queue.DistributedQueue) -> ConsumeResu
                 "command": (
                     f"./store-tests --db {db} --repo {repo} {sha} && "
                     # prune the db if it gets too big; 14 days weighs about 15 MB
-                    f"if [ $(stat +%c {db}) -gt 25000000 ]; then ./prometheus-stats --db {db} --prune 14; fi &&"
+                    f"if [ $(stat -c %s {db}) -gt 25000000 ]; then ./prometheus-stats --db {db} --prune 14; fi &&"
                     f"./prometheus-stats --db {db} --s3 {os.path.join(LOG_STORE, 'prometheus')}"
                 )
             }