diff --git a/test/test_matrixeventprocessor.ts b/test/test_matrixeventprocessor.ts
index 97f0fe7ae05c30fc199cc9d39d4f4df8f41fa7e7..dd1a5d2e543b6740a5079750921b3af2626d472d 100644
--- a/test/test_matrixeventprocessor.ts
+++ b/test/test_matrixeventprocessor.ts
@@ -103,6 +103,7 @@ function createMatrixEventProcessor(): MatrixEventProcessor {
         },
         getClientFactory: () => {
             return {
+                _botUserId: "@botuser:localhost",
                 getClientAs: () => {
                     return mxClient;
                 },