diff --git a/shell/point/config_json.go b/shell/point/config_json.go
index a1413bd0..305ba937 100644
--- a/shell/point/config_json.go
+++ b/shell/point/config_json.go
@@ -133,7 +133,7 @@ func (this *InboundDetourConfig) UnmarshalJSON(data []byte) error {
 			this.Allocation.Refresh = 5
 		}
 		if this.Allocation.Concurrency == 0 {
-			this.Allocation.Concurrency == 3
+			this.Allocation.Concurrency = 3
 		}
 	}
 	return nil