Index: jackrabbit-webapp/src/main/webapp/search.jsp
===================================================================
--- jackrabbit-webapp/src/main/webapp/search.jsp	(revision 1004934)
+++ jackrabbit-webapp/src/main/webapp/search.jsp	(working copy)
@@ -69,7 +69,7 @@
             String stmt;
             if (q.startsWith("related:")) {
                 String path = q.substring("related:".length());
-                stmt = "//element(*, nt:file)[rep:similar(jcr:content, '" + path + "/jcr:content')]/rep:excerpt(.) order by @jcr:score descending";
+                stmt = "//element(*, nt:file)[rep:similar(jcr:content, '" + path.replaceAll("'", "''") + "/jcr:content')]/rep:excerpt(.) order by @jcr:score descending";
                 queryTerms = "similar to <b>" + Text.encodeIllegalXMLCharacters(path) + "</b>";
             } else {
                 queryTerms = "for <b>" + Text.encodeIllegalXMLCharacters(q) + "</b>";