diff --git a/group_test.go b/group_test.go
index 56b2a465f..45ea90430 100644
--- a/group_test.go
+++ b/group_test.go
@@ -982,3 +982,16 @@ func TestGroup_RouteNotFoundUsesRouterConfig(t *testing.T) {
 	assert.Equal(t, "custom-404 POST /v0/*", rec.Body.String())
 	assert.True(t, middlewareCalled, "group middleware must wrap the auto 404 route")
 }
+
+func TestGroupRouteWithoutLeadingSlash(t *testing.T) {
+	e := New()
+	g := e.Group("/v1")
+
+	route := g.GET("posts", func(c *Context) error {
+		return c.NoContent(http.StatusNoContent)
+	})
+
+	assert.Equal(t, "/v1/posts", route.Path)
+	status, _ := request(http.MethodGet, "/v1/posts", e)
+	assert.Equal(t, http.StatusNoContent, status)
+}
diff --git a/route.go b/route.go
index 2468a8816..ced317511 100644
--- a/route.go
+++ b/route.go
@@ -45,7 +45,11 @@ func (r Route) ToRouteInfo(params []string) RouteInfo {
 
 // WithPrefix recreates Route with added group prefix and group middlewares it is grouped to.
 func (r Route) WithPrefix(pathPrefix string, middlewares []MiddlewareFunc) Route {
-	r.Path = pathPrefix + r.Path
+	if pathPrefix != "" && r.Path != "" && pathPrefix[len(pathPrefix)-1] != '/' && r.Path[0] != '/' {
+		r.Path = pathPrefix + "/" + r.Path
+	} else {
+		r.Path = pathPrefix + r.Path
+	}
 
 	if len(middlewares) > 0 {
 		m := make([]MiddlewareFunc, 0, len(middlewares)+len(r.Middlewares))