diff --git a/pkgs/development/python-modules/google-auth-httplib2/default.nix b/pkgs/development/python-modules/google-auth-httplib2/default.nix
index c76f5c572e4..99c9945ea66 100644
--- a/pkgs/development/python-modules/google-auth-httplib2/default.nix
+++ b/pkgs/development/python-modules/google-auth-httplib2/default.nix
@@ -1,4 +1,5 @@
 { lib
+, isPy3k
 , buildPythonPackage
 , fetchPypi
 , flask
@@ -32,10 +33,13 @@ buildPythonPackage rec {
     py.test
   '';
 
+  # ImportError: No module named google.auth
+  doCheck = isPy3k;
+
   meta = {
     description = "Google Authentication Library: httplib2 transport";
     homepage = https://github.com/GoogleCloudPlatform/google-auth-library-python-httplib2;
     license = lib.licenses.asl20;
   };
 
-}
\ No newline at end of file
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 3734a967ec7..f57f4890787 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -3400,7 +3400,7 @@ in {
   google_api_python_client = let
     google_api_python_client = callPackage ../development/python-modules/google-api-python-client { };
   in if isPy3k then google_api_python_client else
-    # Python 2.7 support was deprecated but is still needed by weboob
+    # Python 2.7 support was deprecated but is still needed by weboob and duplicity
     google_api_python_client.overridePythonAttrs (old: rec {
       version = "1.7.6";
       src = old.src.override {