diff --git a/modules/preprocessing.py b/modules/preprocessing.py
index 95e7de1f62ddf9daf2a9ba6d6ad8c0ea9eee708d..8726db25533fe56ddf9e85b9528cbed47dbbd001 100644
--- a/modules/preprocessing.py
+++ b/modules/preprocessing.py
@@ -85,6 +85,7 @@ def _add_windows_attributes(host):
     """Add vagrant attributes to windows hosts"""
     host["communicator"] = "winrm"
     host["winrm_username"] = "vagrant"
+    host["winrm_password"] = "vagrant"
 
 
 def preprocess(definitions, flags):