Index: t3lib/class.t3lib_compressor.php
===================================================================
--- t3lib/class.t3lib_compressor.php	(revision 9529)
+++ t3lib/class.t3lib_compressor.php	(revision )
@@ -266,7 +266,7 @@
 				// we remove BACK_PATH from $filename, so make it relative to TYPO3_mainDir
 			$filenameFromMainDir = substr($filename, strlen($GLOBALS['BACK_PATH']));
 				// if compression is enabled
-			if ($fileOptions['compress']) {
+			if ($fileOptions['compress'] && strpos($filename, '?') === FALSE) {
 				$filesAfterCompression[$this->compressJsFile($filename)] = $fileOptions;
 			} else {
 				$filesAfterCompression[$filename] = $fileOptions;
@@ -343,7 +343,7 @@
 	 * Writes $contents into file $filename together with a gzipped version into $filename.gz
 	 *
 	 * @param	string	$filename		Target filename
-	 * @param	strings	$contents		File contents
+	 * @param	string	$contents		File contents
 	 * @return	void
 	 */
 	protected function writeFileAndCompressed($filename, $contents) {