diff --git a/phsource/mbrola/de6 b/phsource/mbrola/de6
index 1564267c..c5f69ca8 100644
--- a/phsource/mbrola/de6
+++ b/phsource/mbrola/de6
@@ -37,6 +37,8 @@
 
 // phonemes for English words
 0  @L  NULL  40 @ l
+0  m-  NULL  20 @ m
+0  n-  NULL  20 @ n
 0  @2  NULL  0  @
 0  @5  NULL  0  @
 0  a#  NULL  0  @