diff --git a/Makefile b/Makefile
index 179ec182..157e86c4 100644
--- a/Makefile
+++ b/Makefile
@@ -28,7 +28,7 @@ docs/man/%.3: docs/%.md scripts/doc.sh
 docs/html/%.3.html: docs/%.md scripts/doc.sh docs/footer.html
 	scripts/doc.sh $< $@
 
-docs/html/index.html: docs/jugglingdb.md scripts/doc.sh
+docs/html/index.html: docs/jugglingdb.md scripts/doc.sh docs/footer.html
 	scripts/doc.sh $< $@
 
 man: $(MAN_DOCS)
diff --git a/docs/footer.html b/docs/footer.html
index 288bd0a8..4703a0d8 100644
--- a/docs/footer.html
+++ b/docs/footer.html
@@ -1,15 +1,17 @@
 <script>
-    var filename = location.href.match(/([^\/]+)?\.3.html(#.*?)?$/)[1];
-    var div = document.createElement('div');
-    div.innerHTML = 'Found a typo? ' +
-        linkTo('View', 'blob') + ' and ' +
-        linkTo('edit', 'edit') + ' this file online at GitHub.';
+    var filename = location.href.match(/([^\/]+)?\.3.html(#.*?)?$/);
+    if (filename) {
+        var div = document.createElement('div');
+        div.innerHTML = 'Found a typo? ' +
+            linkTo('View', 'blob') + ' and ' +
+            linkTo('edit', 'edit') + ' this file online at GitHub.';
 
-    document.getElementById('man').appendChild(div);
+        document.getElementById('man').appendChild(div);
+    }
 
     function linkTo(text, dir) {
         return '<a href="https://github.com/1602/jugglingdb/' +
-            dir + '/master/docs/' + filename + '.md">' + text + '</a>';
+            dir + '/master/docs/' + filename[1] + '.md">' + text + '</a>';
     }
 
     addLink('h3', '&para;');