cleanup():  Get rid of module index turds.
diff --git a/Doc/tools/mkhowto.sh b/Doc/tools/mkhowto.sh
index fa1a8c2..6ba4869 100755
--- a/Doc/tools/mkhowto.sh
+++ b/Doc/tools/mkhowto.sh
@@ -127,7 +127,7 @@
 }
 
 cleanup() {
-    rm -f $1.aux $1.log $1.out $1.toc $1.bkm $1.idx $1.ind
+    rm -f $1.aux $1.log $1.out $1.toc $1.bkm $1.idx $1.ind mod$1.ind
     if [ ! "$BUILD_DVI" ] ; then
 	rm -f $FILE.dvi
     fi