diff --git a/phsource/ph_vietnam b/phsource/ph_vietnam
index 313dfce8..d4defae3 100644
--- a/phsource/ph_vietnam
+++ b/phsource/ph_vietnam
@@ -640,7 +640,7 @@ phoneme iE // iê : viết, giệc
 	ELSE
 	length 200
 	ENDIF
-  FMT(vietnam/ie_2)
+  FMT(vietnam/ie, 150)
 endphoneme
 
 phoneme Oi // oai sound
diff --git a/phsource/vietnam/ie b/phsource/vietnam/ie
new file mode 100644
index 00000000..f5cf5aee
Binary files /dev/null and b/phsource/vietnam/ie differ