diff --git a/phpBB/docs/CHANGELOG.html b/phpBB/docs/CHANGELOG.html
index ef68d5113d..9ad93e8fea 100644
--- a/phpBB/docs/CHANGELOG.html
+++ b/phpBB/docs/CHANGELOG.html
@@ -106,6 +106,7 @@
 		<li>[Feature] Added optional referer validation of POST requests as additional CSRF protection.</li>
 		<li>[Fix] Added missing form token in acp (thanks NBBN).</li>
 		<li>[Feature] Added optional stricter upload validation to avoid mime sniffing in addition to the safeguards provided by file.php. (thanks to Nicolas Grekas for compiling the list).</li>
+		<li>[Fix] Do not remove whitespace in front of url containing the boards url and no relative path appended (Bug #27355)</li>
 	</ul>
 
 	<a name="v300"></a><h3>1.ii. Changes since 3.0.0</h3>
diff --git a/phpBB/includes/functions_content.php b/phpBB/includes/functions_content.php
index 9eab477a8a..79c32c4e08 100644
--- a/phpBB/includes/functions_content.php
+++ b/phpBB/includes/functions_content.php
@@ -574,7 +574,7 @@ function make_clickable_callback($type, $whitespace, $url, $relative_url, $class
 			// don't touch it and let MAGIC_URL_FULL take care of it.
 			if (!$relative_url)
 			{
-				return $orig_url . '/'; // slash is taken away by relative url pattern
+				return $whitespace . $orig_url . '/'; // slash is taken away by relative url pattern
 			}
 		break;