diff --git a/portal-impl/src/com/liferay/portlet/wiki/engines/mediawiki/MediaWikiEngine.java b/portal-impl/src/com/liferay/portlet/wiki/engines/mediawiki/MediaWikiEngine.java
index caae1af15fe62303393367071fed5a61afc2e075..bb88d9920712bd8e85e27799fbe055c7ab97dcbc 100644
--- a/portal-impl/src/com/liferay/portlet/wiki/engines/mediawiki/MediaWikiEngine.java
+++ b/portal-impl/src/com/liferay/portlet/wiki/engines/mediawiki/MediaWikiEngine.java
@@ -81,6 +81,8 @@ public class MediaWikiEngine implements WikiEngine {
 				}
 
 				if (pagesCount > 0) {
+					title = StringUtil.toLowerCase(title);
+
 					existsObj = Boolean.TRUE;
 				}
 				else {
