Index: SpecialListfiles.php
===================================================================
--- SpecialListfiles.php	(revision 67860)
+++ SpecialListfiles.php	(working copy)
@@ -146,7 +146,7 @@
 				if ( $imgfile === null ) $imgfile = wfMsg( 'imgfile' );
 
 				$name = $this->mCurrentRow->img_name;
-				$link = $this->getSkin()->linkKnown( Title::makeTitle( NS_FILE, $name ), htmlspecialchars( $value ) );
+				$link = $this->getSkin()->linkKnown( Title::makeTitle( NS_FILE, $name ), htmlspecialchars( str_replace( '_', ' ', $value ) ) );
 				$image = wfLocalFile( $value );
 				$url = $image->getURL();
 				$download = Xml::element('a', array( 'href' => $url ), $imgfile );