diff --git a/git-am.sh b/git-am.sh
index 3103c0fc28910560d85f4c2cff2b6a0595848b16..4ab1f21505121a8f89735cf21b1681be2a57767d 100755
--- a/git-am.sh
+++ b/git-am.sh
@@ -509,7 +509,7 @@ then
 		git read-tree --reset -u $head_tree $head_tree &&
 		index_tree=$(git write-tree) &&
 		git read-tree -m -u $index_tree $head_tree
-		git read-tree $head_tree
+		git read-tree -m $head_tree
 		;;
 	,t)
 		if test -f "$dotest/rebasing"