1 files changed, 1 insertions, 1 deletions

diff --git a/arabluatex_trans.lua b/arabluatex_trans.lua
index fbea94b..838bccc 100644
--- a/arabluatex_trans.lua
+++ b/arabluatex_trans.lua
@@ -199,7 +199,7 @@ trigraphstrdmg = { -- trigraphs or more
    {a="(_a)U", b="A"},
    {a="(_a)I", b="A"},
    -- assimilations
-   {a="(n)(})(%s)([rlmnwy])", b="%4%2%3%4"}
+   {a="(n)(}?)(%s)([rlmnwy])", b="%4%2%3%4"}
 }
 
 trigraphstrdmgeasy = { -- see the differences below under 'easy' tag