diff --git a/extract.py b/extract.py
index f730690..d6447a2 100755
--- a/extract.py
+++ b/extract.py
@@ -58,7 +58,8 @@ def main(argv):
     extractTools = [
             { "extension": "\.tar\.gz$", "command": "tar", "params": "-xf", "oparams": "-C" },
             { "extension": "\.tar\.xz$", "command": "tar", "params": "-xf", "oparams": "-C" },
-            { "extension": "\.zip$", "command": "unzip", "params": "", "oparams": "-d" }
+            { "extension": "\.zip$", "command": "unzip", "params": "", "oparams": "-d" },
+            { "extension": "\.rar$", "command": "unrar", "params": "x", "oparams": "" },
             ]
 
     if os.path.isfile(argv[0]) == False:
@@ -91,7 +92,8 @@ def main(argv):
                     if not os.path.exists(output_path):
                         os.makedirs(output_path)
                     
-                    command.append(tool['oparams'])
+                    if tool["oparams"] is not "":
+                        command.append(tool['oparams'])
                     command.append(output_path)
 
                 try: