diff --git a/math.scad b/math.scad
index 784bb59..842157f 100644
--- a/math.scad
+++ b/math.scad
@@ -137,7 +137,7 @@ function modrange(x, y, m, step=1) =
 function sqr(x) = x*x;
 
 
-// Function: rand_int(min,max,N,seed)
+// Function: rand_int()
 // Usage:
 //   rand_int(min,max,N,[seed]);
 // Description:
diff --git a/scripts/genindex.sh b/scripts/genindex.sh
index 1ae94b5..e124990 100755
--- a/scripts/genindex.sh
+++ b/scripts/genindex.sh
@@ -14,7 +14,7 @@ function lcase
 function mkindex
 {
     TMPFILE=$(mktemp -t $(basename $0)) || exit 1
-    sed 's/[^a-zA-Z0-9_.:$]//g' | awk -F ':' '{printf "- [%s](%s#%s)\n", $3, $1, $3}' | sort -d -f -u >> $TMPFILE
+    sed 's/([^)]*)//g' | sed 's/[^a-zA-Z0-9_.:$]//g' | awk -F ':' '{printf "- [%s](%s#%s)\n", $3, $1, $3}' | sort -d -f -u >> $TMPFILE
     alpha="A B C D E F G H I J K L M N O P Q R S T U V W X Y Z"
     for a in $alpha; do
         echo -n "[$a](#$(lcase "$a")) "
@@ -34,7 +34,7 @@ function mkindex
 
 
 (
-    echo "# Belfry OpenScad Library Index"
+    echo "## Belfry OpenScad Library Index"
     (
         grep 'Constant: ' *.scad
         grep 'Function: ' *.scad