diff --git a/modules/preprocessing.py b/modules/preprocessing.py
index 06deecd2389573bedd8905e587191255dff68ad5..2562f20f6d917759a76d65fc64f86e780ac4f4ec 100644
--- a/modules/preprocessing.py
+++ b/modules/preprocessing.py
@@ -71,6 +71,15 @@ def _delete_dummy_router(definitions):
             return
 
 
+def _find_windows_boxes(definitions):
+    """Find and return list of host names with windows boxes."""
+    windows_hosts = []
+    for host in definitions["hosts"]:
+        if "windows" in host["base_box"]["image"].lower():
+            windows_hosts.append(host["name"])
+    return windows_hosts
+
+
 def preprocess(definitions, flags):
     """Run preprocessing.