diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index b5016ca660..4846941452 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -4480,7 +4480,9 @@ function toggleLineNumbers() {
                 e2.innerHTML = "[Hide line numbers]";
         }
 }
-document.getElementsByTagName("head")[0].innerHTML += "<style id=\'lineNoStyle\'></style>";
+var style = document.createElement("style");
+style.setAttribute("id", "lineNoStyle");
+document.getElementsByTagName("head")[0].appendChild(style);
 toggleLineNumbers();
 </script>
 ';