diff --git a/doc/mkgraf.sh b/doc/mkgraf.sh
index dd4f0be..0f26103 100644
--- a/doc/mkgraf.sh
+++ b/doc/mkgraf.sh
@@ -7,7 +7,7 @@ gnuplot << __EOF__
 
 set term latex
 set output "$OUT"
-set title "COS010"
+set title "COS01"
 
 plot					\
 	[0:1] [0:1]			\