diff --git a/api/internal/snapshot/snapshot.go b/api/internal/snapshot/snapshot.go
index da9565cce..2c2e5ef34 100644
--- a/api/internal/snapshot/snapshot.go
+++ b/api/internal/snapshot/snapshot.go
@@ -4,7 +4,7 @@ import (
 	"log"
 	"time"
 
-	"github.com/portainer/portainer/api"
+	portainer "github.com/portainer/portainer/api"
 )
 
 // Service repesents a service to manage endpoint snapshots.
@@ -48,7 +48,9 @@ func (service *Service) stop() {
 		return
 	}
 
+	// clear refreshSignal to mark the service as disabled
 	close(service.refreshSignal)
+	service.refreshSignal = nil
 }
 
 // SetSnapshotInterval sets the snapshot interval and resets the service