diff --git a/fonts/helvR10.bdf b/fonts/helvR10.bdf
index 97ed931702..b80de661c9 100644
--- a/fonts/helvR10.bdf
+++ b/fonts/helvR10.bdf
@@ -2594,7 +2594,7 @@ ENDCHAR
 STARTCHAR idieresis
 ENCODING 239
 SWIDTH 278 0
-DWIDTH 2 0
+DWIDTH 3 0
 BBX 3 8 0 0
 BITMAP
 A0