diff --git a/pythonforandroid/recipes/pycrypto/__init__.py b/pythonforandroid/recipes/pycrypto/__init__.py
index 4f984f09bf..4d52f8dba2 100644
--- a/pythonforandroid/recipes/pycrypto/__init__.py
+++ b/pythonforandroid/recipes/pycrypto/__init__.py
@@ -22,7 +22,7 @@ def prebuild_arch(self, arch):
         if exists(join(build_dir, '.patched')):
             print('pycrypto already patched, skipping')
             return
-        self.apply_patch('add_length.patch')
+        self.apply_patch('add_length.patch', arch.arch)
         shprint(sh.touch, join(build_dir, '.patched'))
 
     def get_recipe_env(self, arch):