diff --git a/python/mozbuild/mozbuild/controller/clobber.py b/python/mozbuild/mozbuild/controller/clobber.py
index d3cdfd5968..ba83e24285 100644
--- a/python/mozbuild/mozbuild/controller/clobber.py
+++ b/python/mozbuild/mozbuild/controller/clobber.py
@@ -58,6 +58,9 @@ class Clobberer(object):
         if not os.path.isfile(self.src_clobber):
             self.src_clobber = os.path.join(topsrcdir, 'mozilla', 'CLOBBER')
 
+        if not os.path.isfile(self.src_clobber):
+            self.src_clobber = os.path.join(topsrcdir, 'platform', 'CLOBBER')
+
         assert os.path.isfile(self.src_clobber)
 
     def clobber_needed(self):