diff --git a/docs/classchart.ps b/docs/classchart.ps
index dbe02a47ec..0a23180ea2 100644
--- a/docs/classchart.ps
+++ b/docs/classchart.ps
@@ -14,7 +14,7 @@
 % sets the default font for class names
 /SetClassFont
 {
-/ArialMT findfont
+/Arial-BoldMT findfont
 10 scalefont
 setfont
 } def