diff --git a/tools/bin/genFontTable.plx b/tools/bin/genFontTable.plx
index 97b7eda1..268dc874 100644
--- a/tools/bin/genFontTable.plx
+++ b/tools/bin/genFontTable.plx
@@ -50,7 +50,7 @@ sub deleteTemp {
 }
 
 my $signSize   = 0x80;
-my $headerSize = 0x30;
+my $headerSize = 0x20;
 
 # �v�f���Z�o
 my $num = 0;