diff --git a/thirdparty/tinymce/tiny_mce_gzip.php b/thirdparty/tinymce/tiny_mce_gzip.php
index 8c571689c..d07fe1b5f 100755
--- a/thirdparty/tinymce/tiny_mce_gzip.php
+++ b/thirdparty/tinymce/tiny_mce_gzip.php
@@ -94,17 +94,17 @@ class TinyMCE_Compressor {
 		$plugins = self::getParam("plugins");
 		if ($plugins)
 			$this->settings["plugins"] = $plugins;
-		$plugins = explode(',', $this->settings["plugins"]);
+		$plugins = array_unique(explode(',', $this->settings["plugins"]));
 
 		$themes = self::getParam("themes");
 		if ($themes)
 			$this->settings["themes"] = $themes;
-		$themes = explode(',', $this->settings["themes"]);
+		$themes = array_unique(explode(',', $this->settings["themes"]));
 
 		$languages = self::getParam("languages");
 		if ($languages)
 			$this->settings["languages"] = $languages;
-		$languages = explode(',', $this->settings["languages"]);
+		$languages = array_unique(explode(',', $this->settings["languages"]));
 
 		$tagFiles = self::getParam("files");
 		if ($tagFiles)
@@ -140,7 +140,7 @@ class TinyMCE_Compressor {
 		}
 
 		// Add any specified files.
-		$allFiles = array_merge($files, explode(',', $this->settings['files']));
+		$allFiles = array_merge($files, array_unique(explode(',', $this->settings['files'])));
 
 		// Process source files
 		for ($i = 0; $i < count($allFiles); $i++) {