diff --git a/rebuild_benchmark.sh b/rebuild_benchmark.sh
index 5bbd275..e6f0bc2 100755
--- a/rebuild_benchmark.sh
+++ b/rebuild_benchmark.sh
@@ -19,30 +19,49 @@ for capacity in ${capacities}; do
 done
 
 {
-  echo -n '| | '
+  echo -n '| |'
   for capacity in ${capacities}; do
-    echo -n "${capacity} | "
+    echo -n " ${capacity} |"
   done
   echo ''
-  echo -n '| --- | '
+  echo -n '| --- |'
   for capacity in ${capacities}; do
-    echo -n "--- | "
+    echo -n " --- |"
   done
   echo ''
   maps=$(cut -f 1 tmp/2.out)
   for map in ${maps}; do
-    if [ "${map}" -eq "micromap::Map" ]; then
-      break
+    if [ "${map}" == "micromap::Map" ]; then
+      continue;
     fi
-    echo -n "| \`${map}\` | "
+    echo -n "| \`${map}\` |"
     for capacity in ${capacities}; do
       our=$(grep "micromap::Map" "tmp/${capacity}.out" | cut -f 2)
+      if [ "${our}" -eq "0" ]; then
+        our=1
+      fi
       their=$(grep "${map}" "tmp/${capacity}.out" | cut -f 2)
-      perl -e "printf(\"%.02f | \", ${their} / ${our});"
+      perl -e "printf(\" %.02f |\", ${their} / ${our});"
     done
     echo ''
   done
 } > tmp/table.md
 
-perl -e
-
+perl -e '
+  my $readme;
+  my $file = "README.md";
+  open(my $r, "<", $file);
+  { local $/; $readme = <$r>; }
+  close($r);
+  my $sep = "<!-- benchmark -->";
+  my @p = split(/\Q$sep\E/, $readme);
+  my $table = "tmp/table.md";
+  open(my $t, "<", $table);
+  { local $/; $table = <$t>; }
+  close($t);
+  $p[1] = "\n\n" . $table . "\n\n";
+  my $new = join($sep, @p);
+  open(my $w, ">", $file);
+  print $w join($sep, @p);
+  close($w);
+'