diff --git a/hgext/convert/__init__.py b/hgext/convert/__init__.py
index 99e88320d665e42d5da4d0090b764404d8151e15_aGdleHQvY29udmVydC9fX2luaXRfXy5weQ==..6fb55c6c65621b7c4ddd4f82e3e3a14ae5a021d7_aGdleHQvY29udmVydC9fX2luaXRfXy5weQ== 100644
--- a/hgext/convert/__init__.py
+++ b/hgext/convert/__init__.py
@@ -192,6 +192,9 @@
         (forces target IDs to change). It takes a boolean argument and
         defaults to False.
 
+    :convert.hg.startrev: specify the initial Mercurial revision.
+        The default is 0.
+
     :convert.hg.revs: revset specifying the source revisions to convert.
 
     CVS Source
diff --git a/tests/test-convert.t b/tests/test-convert.t
index 99e88320d665e42d5da4d0090b764404d8151e15_dGVzdHMvdGVzdC1jb252ZXJ0LnQ=..6fb55c6c65621b7c4ddd4f82e3e3a14ae5a021d7_dGVzdHMvdGVzdC1jb252ZXJ0LnQ= 100644
--- a/tests/test-convert.t
+++ b/tests/test-convert.t
@@ -143,6 +143,8 @@
                     store original revision ID in changeset (forces target IDs
                     to change). It takes a boolean argument and defaults to
                     False.
+      convert.hg.startrev
+                    specify the initial Mercurial revision. The default is 0.
       convert.hg.revs
                     revset specifying the source revisions to convert.