diff --git a/pupy/pupygen.py b/pupy/pupygen.py
index 04155773..2b99e6b3 100755
--- a/pupy/pupygen.py
+++ b/pupy/pupygen.py
@@ -256,14 +256,17 @@ def parse_scriptlets(args_scriptlet, debug=False):
 class ListOptions(argparse.Action):
     def __call__(self, parser, namespace, values, option_string=None):
         print colorize("## available formats :", "green")+" usage: -f <format>"
-        print "\t- exe_86, exe_x64 : generate PE exe for windows"
-        print "\t- dll_86, dll_x64 : generate reflective dll for windows"
-        print "\t- py              : generate a fully packaged python file (with all the dependencies packaged and executed from memory), all os (need the python interpreter installed)"
-        print "\t- pyinst          : generate a python file compatible with pyinstaller"
-        print "\t- py_oneliner     : same as \"py\" format but served over http to load it from memory with a single command line."
-        print "\t- ps1             : generate ps1 file which embeds pupy dll (x86-x64) and inject it to current process."
-        print "\t- ps1_oneliner    : load pupy remotely from memory with a single command line using powershell."
-        print "\t- rubber_ducky    : generate a Rubber Ducky script and inject.bin file (Windows Only)."
+        print "\t- exe_86, exe_x64  : generate PE exe for windows"
+        print "\t- dll_86, dll_x64  : generate reflective dll for windows"
+        print "\t- lin_x86, lin_x64 : generate a ELF binary for linux"
+        print "\t- so_x86, so_x64   : generate a ELF .so for linux"
+        print "\t- py               : generate a fully packaged python file (with all the dependencies packaged and executed from memory), all os (need the python interpreter installed)"
+        print "\t- pyinst           : generate a python file compatible with pyinstaller"
+        print "\t- py_oneliner      : same as \"py\" format but served over http to load it from memory with a single command line."
+        print "\t- ps1              : generate ps1 file which embeds pupy dll (x86-x64) and inject it to current process."
+        print "\t- ps1_oneliner     : load pupy remotely from memory with a single command line using powershell."
+        print "\t- rubber_ducky     : generate a Rubber Ducky script and inject.bin file (Windows Only)."
+        print "\t- apk              : generate a apk for running pupy on android"
 
         print ""
         print colorize("## available transports :","green")+" usage: -t <transport>"