diff --git a/internal/handler/self_order_handler.go b/internal/handler/self_order_handler.go
index e73dfb7..715e9fa 100644
--- a/internal/handler/self_order_handler.go
+++ b/internal/handler/self_order_handler.go
@@ -358,7 +358,7 @@ func (h *SelfOrderHandler) CreateOrder(c *gin.Context) {
 
 func (h *SelfOrderHandler) GetOrdersBySession(c *gin.Context) {
 	ctx := c.Request.Context()
-	sessionID := c.Param("sessionId")
+	sessionID := c.Param("session_id")
 
 	if sessionID == "" {
 		util.HandleResponse(c.Writer, c.Request, contract.BuildErrorResponse([]*contract.ResponseError{
diff --git a/internal/router/router.go b/internal/router/router.go
index e74d0b4..544d0ed 100644
--- a/internal/router/router.go
+++ b/internal/router/router.go
@@ -157,7 +157,7 @@ func (r *Router) addAppRoutes(rg *gin.Engine) {
 			selfOrder.GET("/categories", r.selfOrderHandler.ListCategories)
 			selfOrder.GET("/menu", r.selfOrderHandler.GetMenu)
 			selfOrder.POST("/orders", r.selfOrderHandler.CreateOrder)
-			selfOrder.GET("/orders/:sessionId", r.selfOrderHandler.GetOrdersBySession)
+			selfOrder.GET("/orders/:session_id", r.selfOrderHandler.GetOrdersBySession)
 		}
 
 		organizations := v1.Group("/organizations")