diff --git a/app/src/main/java/com/commit451/gitlab/model/api/MergeRequest.kt b/app/src/main/java/com/commit451/gitlab/model/api/MergeRequest.kt
index 84168927ed658f15bc163e3c089045c5a2ad284f..a6df4e31f4a2d378a717e7df168a3f6bea1e21f9 100644
--- a/app/src/main/java/com/commit451/gitlab/model/api/MergeRequest.kt
+++ b/app/src/main/java/com/commit451/gitlab/model/api/MergeRequest.kt
@@ -50,7 +50,7 @@ open class MergeRequest {
     @field:Json(name = "assignee")
     var assignee: User? = null
     @field:Json(name = "source_project_id")
-    var sourceProjectId: Long = 0
+    var sourceProjectId: Long? = 0
     @field:Json(name = "target_project_id")
     var targetProjectId: Long = 0
     @field:Json(name = "labels")