diff --git a/storage/diskmetricstore.go b/storage/diskmetricstore.go
index ff1dbe6e..462c9912 100644
--- a/storage/diskmetricstore.go
+++ b/storage/diskmetricstore.go
@@ -125,7 +125,9 @@ func (dms *DiskMetricStore) Healthy() error {
 	// A pushgateway that cannot be written to should not be
 	// considered as healthy.
 	if len(dms.writeQueue) == cap(dms.writeQueue) {
-		return fmt.Errorf("write queue is full")
+		err := fmt.Errorf("write queue is full")
+		level.Warn(dms.logger).Log("msg", err)
+		return err
 	}
 
 	return nil