diff --git a/gin.go b/gin.go
index ea9345a..37e6e4d 100644
--- a/gin.go
+++ b/gin.go
@@ -126,16 +126,18 @@ func (engine *Engine) ServeHTTP(writer http.ResponseWriter, request *http.Reques
 	engine.router.ServeHTTP(writer, request)
 }
 
-func (engine *Engine) Run(addr string) {
+func (engine *Engine) Run(addr string) error {
 	debugPrint("Listening and serving HTTP on %s", addr)
 	if err := http.ListenAndServe(addr, engine); err != nil {
-		panic(err)
+		return err
 	}
+	return nil
 }
 
-func (engine *Engine) RunTLS(addr string, cert string, key string) {
+func (engine *Engine) RunTLS(addr string, cert string, key string) error {
 	debugPrint("Listening and serving HTTPS on %s", addr)
 	if err := http.ListenAndServeTLS(addr, cert, key, engine); err != nil {
-		panic(err)
+		return err
 	}
+	return nil
 }