diff --git a/theme/font.php b/theme/font.php
index f093421e993..867b45147b0 100644
--- a/theme/font.php
+++ b/theme/font.php
@@ -62,15 +62,15 @@ if (preg_match('/^[a-z0-9_-]+\.woff$/i', $font, $matches)) {
     $font = $matches[0];
     $mimetype = 'application/font-woff';
 
-} else if (preg_match('^[a-z0-9_-]+/\.ttf$/i', $font, $matches)) {
+} else if (preg_match('/^[a-z0-9_-]+\.ttf$/i', $font, $matches)) {
     $font = $matches[0];
     $mimetype = 'application/x-font-ttf';
 
-} else if (preg_match('^[a-z0-9_-]+/\.otf$/i', $font, $matches)) {
+} else if (preg_match('/^[a-z0-9_-]+\.otf$/i', $font, $matches)) {
     $font = $matches[0];
     $mimetype = 'application/x-font-opentype';
 
-} else if (preg_match('^[a-z0-9_-]+/\.oet$/i', $font, $matches)) {
+} else if (preg_match('/^[a-z0-9_-]+\.oet$/i', $font, $matches)) {
     // IE8 must die!!!
     $font = $matches[0];
     $mimetype = 'application/vnd.ms-fontobject';