diff --git a/phsource/ph_quenya b/phsource/ph_quenya
index d77f24f8..71b3b36c 100644
--- a/phsource/ph_quenya
+++ b/phsource/ph_quenya
@@ -6,6 +6,12 @@ phoneme n
 endphoneme
 
 
+phoneme aI
+  vwl starttype #a endtype #i
+  length 240
+  FMT(vdiph/ai)
+endphoneme
+
 phoneme ui
   vwl starttype #u endtype #i
   length 270