diff --git a/zipper/protocols/victoriametrics/feature_set.go b/zipper/protocols/victoriametrics/feature_set.go
index 38758f6a6..47fe53d37 100644
--- a/zipper/protocols/victoriametrics/feature_set.go
+++ b/zipper/protocols/victoriametrics/feature_set.go
@@ -182,7 +182,7 @@ func (c *VictoriaMetricsGroup) updateFeatureSet(ctx context.Context) {
 	)
 
 	if minFeatureSet == nil {
-		minFeatureSet = versionToFeatureSet(logger, "c.fallbackVersion")
+		minFeatureSet = versionToFeatureSet(logger, c.fallbackVersion)
 	}
 
 	c.featureSet.Store(minFeatureSet)