--- a/tests/proportional_cbdt.ttx
+++ b/tests/proportional_cbdt.ttx
@@ -13,7 +13,7 @@
     <mtx name=".notdef" width="0" lsb="5"/>
     <mtx name=".space" width="0" lsb="0"/>
     <mtx name="e000" width="110" lsb="0"/>
-    <mtx name="e001" width="73" lsb="0"/>
+    <mtx name="e001" width="74" lsb="0"/>
   </hmtx>
 
   <cmap>
@@ -79,10 +79,10 @@
       <cbdt_bitmap_format_17 name="e001">
         <SmallGlyphMetrics>
           <height value="128"/>
-          <width value="85"/>
+          <width value="86"/>
           <BearingX value="0"/>
           <BearingY value="104"/>
-          <Advance value="85"/>
+          <Advance value="86"/>
         </SmallGlyphMetrics>
         <extfileimagedata value="e001.png"/>
       </cbdt_bitmap_format_17>