diff --git a/tools/patman/commit.py b/tools/patman/commit.py
index a645b22d08..9537de43d3 100644
--- a/tools/patman/commit.py
+++ b/tools/patman/commit.py
@@ -28,6 +28,7 @@ class Commit:
             key: rtag type (e.g. 'Reviewed-by')
             value: Set of people who gave that rtag, each a name/email string
         warn: List of warnings for this commit, each a str
+        patch (str): Filename of the patch file for this commit
     """
     def __init__(self, hash):
         self.hash = hash
@@ -40,6 +41,7 @@ class Commit:
         self.change_id = None
         self.rtags = collections.defaultdict(set)
         self.warn = []
+        self.patch = ''
 
     def __str__(self):
         return self.subject