diff --git a/lib/squib/graphics/text.rb b/lib/squib/graphics/text.rb
index faca2b5..cd7b968 100644
--- a/lib/squib/graphics/text.rb
+++ b/lib/squib/graphics/text.rb
@@ -109,7 +109,7 @@ module Squib
rule = embed.rules[key]
spacing = rule[:width] * Pango::SCALE
index = clean_str.index(key)
- str.sub!(key, "aa")
+ str.sub!(key, "aaa")
layout.markup = str
clean_str = layout.text
rect = layout.index_to_pos(index)