diff --git a/phsource/ph_vietnam b/phsource/ph_vietnam
index a52034e5..313dfce8 100644
--- a/phsource/ph_vietnam
+++ b/phsource/ph_vietnam
@@ -609,7 +609,7 @@ phoneme O# // ong
 	length 200
 	ENDIF
   //FMT(vnasal/&u_n)
-  FMT(vietnam/O_short)
+  FMT(vietnam/O_short_2)
 endphoneme
 
 
diff --git a/phsource/vietnam/O_short_2 b/phsource/vietnam/O_short_2
new file mode 100644
index 00000000..1e1158df
Binary files /dev/null and b/phsource/vietnam/O_short_2 differ