diff -ru typo3_src-6.1.0_orig/typo3/sysext/core/Classes/Resource/ResourceCompressor.php typo3_src-6.1.0/typo3/sysext/core/Classes/Resource/ResourceCompressor.php
--- typo3_src-6.1.0_orig/typo3/sysext/core/Classes/Resource/ResourceCompressor.php	2013-04-30 08:18:56.000000000 +0200
+++ typo3_src-6.1.0/typo3/sysext/core/Classes/Resource/ResourceCompressor.php	2013-05-15 11:35:48.000000000 +0200
@@ -482,9 +482,12 @@
 		foreach ($jsFiles as $key => $fileOptions) {
 			// if compression is enabled
 			if ($fileOptions['compress']) {
-				$fileOptions['file'] = $this->compressJsFile($fileOptions['file']);
+				$filename = $this->compressJsFile($fileOptions['file']);
+				$fileOptions['file'] = $filename;
+				$filesAfterCompression[$filename] = $fileOptions;
+			} else {
+				$filesAfterCompression[$key] = $fileOptions;
 			}
-			$filesAfterCompression[$key] = $fileOptions;
 		}
 		return $filesAfterCompression;
 	}
@@ -696,4 +699,4 @@
 }
 
 
-?>
\ Kein Zeilenumbruch am Dateiende.
+?>