diff --git a/command/agent/agent.go b/command/agent/agent.go
index 3f40aa4c45..5f575d0e44 100644
--- a/command/agent/agent.go
+++ b/command/agent/agent.go
@@ -325,7 +325,7 @@ func (a *Agent) listenAndServeDNS() error {
 
 			err := s.ListenAndServe(p.Net, p.Addr, func() { notif <- p })
 			if err != nil && !strings.Contains(err.Error(), "accept") {
-				a.logger.Printf("[ERR] agent: Error starting DNS server %s (%s): ", p.Addr, p.Net, err)
+				a.logger.Printf("[ERR] agent: Error starting DNS server %s (%s): %v", p.Addr, p.Net, err)
 			}
 		}()
 	}