diff --git a/src/rootPages/Designer/properties/process/ABProcessGatewayExclusive.js b/src/rootPages/Designer/properties/process/ABProcessGatewayExclusive.js
index f0f3d32..cfa093d 100644
--- a/src/rootPages/Designer/properties/process/ABProcessGatewayExclusive.js
+++ b/src/rootPages/Designer/properties/process/ABProcessGatewayExclusive.js
@@ -88,6 +88,7 @@ export default function (AB) {
             const connectedElement = element.process.elementForDiagramID(
                conn.to
             );
+            if (connectedElement == null) return;
 
             let DF;
             if (!this.__dfLookup[conn.id]) {