diff --git a/materials.xml b/materials.xml
index 24c439115..19d7c75dc 100644
--- a/materials.xml
+++ b/materials.xml
@@ -1704,8 +1704,8 @@ Shared parameters for various materials.
  <glyph> <name>right-up</name>   <left>0.87573</left> <right>0.89527</right> </glyph>
  <glyph> <name>left-down</name>  <left>0.89527</left> <right>0.91529</right> </glyph>
  <glyph> <name>right-down</name> <left>0.91529</left> <right>0.93457</right> </glyph>
- <glyph> <name>start-frame</name><left>0.98462</left> <right>0.98926</right> </glyph>
- <glyph> <name>stop-frame</name> <left>0.99390</left> <right>0.99854</right> </glyph>
+ <glyph> <name>start-frame</name><left>0.98389</left> <right>0.98926</right> </glyph>
+ <glyph> <name>stop-frame</name> <left>0.99390</left> <right>0.99976</right> </glyph>
 </material>
 
 <material>