diff --git a/bitbake/lib/bb/siggen.py b/bitbake/lib/bb/siggen.py
index bb8203df05..9db29a2ecf 100644
--- a/bitbake/lib/bb/siggen.py
+++ b/bitbake/lib/bb/siggen.py
@@ -57,6 +57,8 @@ class SignatureGenerator(object):
     def invalidate_task(self, task, d, fn):
         bb.build.del_stamp(task, d, fn)
 
+    def dump_sigs(self, dataCache):
+        return
 
 class SignatureGeneratorBasic(SignatureGenerator):
     """