diff --git a/verification/test-wdls/TestMultiome.wdl b/verification/test-wdls/TestMultiome.wdl
index 351bd2c06d..9f35f7b8ae 100644
--- a/verification/test-wdls/TestMultiome.wdl
+++ b/verification/test-wdls/TestMultiome.wdl
@@ -50,7 +50,7 @@ workflow TestMultiome {
       Boolean update_truth
       String vault_token_path
       String google_account_vault_path
-      Boolean run_cellbender
+      Boolean run_cellbender = false
 
     }