diff --git a/vault.js b/vault.js
index c342fe7..f8f3b9a 100644
--- a/vault.js
+++ b/vault.js
@@ -14,7 +14,7 @@ export function vaultAddress(chainId, owner, num=0) {
         return result
     }
     catch (e) {
-        console.error('Could not generate vault address',chainId,owner,num)
+        console.error('Could not generate vault address',chainId,owner,num,e)
         return null
     }
 }