diff --git a/classes/display/HTMLDisplayHandler.php b/classes/display/HTMLDisplayHandler.php
index eeecd6d6b..7437ce6d3 100644
--- a/classes/display/HTMLDisplayHandler.php
+++ b/classes/display/HTMLDisplayHandler.php
@@ -460,7 +460,7 @@ class HTMLDisplayHandler
 				$buffer .= file_get_contents(_XE_PATH_ . 'common/js/' . $filename) . "\n";
 			}
 			$minifier = new MatthiasMullie\Minify\JS($buffer);
-			FileHandler::writeFile(_XE_PATH_ . $concat_target_filename, $minifier->minify());
+			FileHandler::writeFile(_XE_PATH_ . $concat_target_filename, $minifier->execute());
 			$oContext->loadFile(array('./' . $concat_target_filename, 'head', '', -100000), true);
 		}
 	}
diff --git a/classes/frontendfile/FrontEndFileHandler.class.php b/classes/frontendfile/FrontEndFileHandler.class.php
index 4643927ce..43f992d12 100644
--- a/classes/frontendfile/FrontEndFileHandler.class.php
+++ b/classes/frontendfile/FrontEndFileHandler.class.php
@@ -186,17 +186,17 @@ class FrontEndFileHandler extends Handler
 			
 				if(!file_exists($minifiedFilePath) || filemtime($minifiedFilePath) < filemtime($originalFilePath))
 				{
-					FileHandler::makeDir(_XE_PATH_ . 'files/cache/minify');
 					if($file->fileExtension === 'css')
 					{
 						$minifier = new MatthiasMullie\Minify\CSS($originalFilePath);
-						$minifier->minify($minifiedFilePath);
+						$content = $minifier->execute($minifiedFilePath);
 					}
 					else
 					{
 						$minifier = new MatthiasMullie\Minify\JS($originalFilePath);
-						$minifier->minify($minifiedFilePath);
+						$content = $minifier->execute($minifiedFilePath);
 					}
+					FileHandler::writeFile($minifiedFilePath, $content);
 				}
 				
 				$file->fileName = $minifiedFileHash . '.' . $minifiedFileName;