diff --git a/p2p/net/swarm/dial_error.go b/p2p/net/swarm/dial_error.go
index 4de682204e..faa1047d54 100644
--- a/p2p/net/swarm/dial_error.go
+++ b/p2p/net/swarm/dial_error.go
@@ -53,7 +53,7 @@ func (e *DialError) Unwrap() []error {
 		return nil
 	}
 
-	errs := make([]error, len(e.DialErrors)+1)
+	errs := make([]error, 0, len(e.DialErrors)+1)
 	if e.Cause != nil {
 		errs = append(errs, e.Cause)
 	}