diff --git a/gclient.py b/gclient.py
index f861ed930a..f1fa9b53e4 100755
--- a/gclient.py
+++ b/gclient.py
@@ -651,6 +651,8 @@ class Dependency(gclient_utils.WorkItem, DependencySettings):
         ent = self.recursedeps.get(name)
         if ent is not None:
           deps_file = ent['deps_file']
+      if dep_value is None:
+        continue
       if isinstance(dep_value, basestring):
         url = dep_value
       else:
diff --git a/testing_support/fake_repos.py b/testing_support/fake_repos.py
index 899114c001..764d85cec1 100755
--- a/testing_support/fake_repos.py
+++ b/testing_support/fake_repos.py
@@ -451,6 +451,17 @@ deps = {
     'url': '%(git_base)srepo_2@%(hash)s',
   },
 }
+deps_os ={
+  'mac': {
+    'src/none_repo': None,
+  },
+  'unix': {
+    'src/none_repo': None,
+  },
+  'win': {
+    'src/none_repo': None,
+  },
+}
 hooks = [
   {
     'pattern': '.',