diff --git a/src/main/kotlin/com/s63d/tripmiddleware/domain/intern/InternTrip.kt b/src/main/kotlin/com/s63d/tripmiddleware/domain/intern/InternTrip.kt
index b871c11..e5a468c 100644
--- a/src/main/kotlin/com/s63d/tripmiddleware/domain/intern/InternTrip.kt
+++ b/src/main/kotlin/com/s63d/tripmiddleware/domain/intern/InternTrip.kt
@@ -1,3 +1,5 @@
 package com.s63d.tripmiddleware.domain.intern
 
-data class InternTrip (val id: Long, val polyline: String, val vehicleWeight: Int)
\ No newline at end of file
+data class InternTrip (val id: Long, val polyline: String, val vehicleWeight: Int) {
+    private constructor() : this(-1, "", -1)
+}
\ No newline at end of file