diff --git a/phsource/ph_vietnam b/phsource/ph_vietnam
index fd91451a..d36e5219 100644
--- a/phsource/ph_vietnam
+++ b/phsource/ph_vietnam
@@ -907,10 +907,10 @@ phoneme w
   ELSE
     // no vowel follows
 	length 80
-    Vowelout len=50
+    Vowelout len=20 rms=20
     
     //FMT(w/w_)
-	FMT(vietnam/w_)
+	FMT(vietnam/w_, 150)
   ENDIF
 endphoneme
 
diff --git a/phsource/vietnam/w_ b/phsource/vietnam/w_
index df054610..810027e3 100644
Binary files a/phsource/vietnam/w_ and b/phsource/vietnam/w_ differ