diff --git a/lib/ingestserver/conns_map.go b/lib/ingestserver/conns_map.go
index 4b6c7c1f11..997a1df1d7 100644
--- a/lib/ingestserver/conns_map.go
+++ b/lib/ingestserver/conns_map.go
@@ -46,7 +46,7 @@ func (cm *ConnsMap) Delete(c net.Conn) {
 // CloseAll gradually closes all the cm conns with during the given shutdownDuration.
 func (cm *ConnsMap) CloseAll(shutdownDuration time.Duration) {
 	cm.mu.Lock()
-	conns := make([]net.Conn, len(cm.m))
+	conns := make([]net.Conn, 0, len(cm.m))
 	for c := range cm.m {
 		conns = append(conns, c)
 		delete(cm.m, c)