diff --git a/tools/update-packaging/make_incremental_updates.py b/tools/update-packaging/make_incremental_updates.py
index f000967b8718..a56395fafb61 100755
--- a/tools/update-packaging/make_incremental_updates.py
+++ b/tools/update-packaging/make_incremental_updates.py
@@ -37,7 +37,7 @@ class PatchInfo:
             mozilla/tools/update-packaging/common.sh/make_add_instruction
         """
         if filename.startswith("extensions/"):
-            # Dir immediately following extensions is used for the test
+            # Directory immediately following extensions is used for the test
             testdir = "extensions/"+filename.split("/")[1]
             self.manifest.append('add-if "'+testdir+'" "'+filename+'"')
         elif filename.startswith("Contents/MacOS/extensions/"):