diff --git a/main.go b/main.go
index e585e16..42b0279 100644
--- a/main.go
+++ b/main.go
@@ -43,6 +43,7 @@ func updateStates() {
 	upstreams2Gauge.Reset()
 	bgpCommunitiesGauge.Reset()
 	ripeRISPeerRouteCount.Reset()
+	prefixCountGauge.Reset()
 
 	fetchRisPeer()