diff --git a/build/mach_bootstrap.py b/build/mach_bootstrap.py
index 3f9b200085..6d7d44bcb3 100644
--- a/build/mach_bootstrap.py
+++ b/build/mach_bootstrap.py
@@ -73,7 +73,6 @@ SEARCH_PATHS = [
 
 # Individual files providing mach commands.
 MACH_MODULES = [
-    'addon-sdk/mach_commands.py',
     'build/valgrind/mach_commands.py',
     'dom/bindings/mach_commands.py',
     'layout/tools/reftest/mach_commands.py',