diff --git a/bitbake/lib/bb/siggen.py b/bitbake/lib/bb/siggen.py
index e047c217e5..2b51967c02 100644
--- a/bitbake/lib/bb/siggen.py
+++ b/bitbake/lib/bb/siggen.py
@@ -440,7 +440,7 @@ class SignatureGeneratorUniHashMixIn(object):
                 bb.debug((1, 2)[unihash == taskhash], 'Found unihash %s in place of %s for %s from %s' % (unihash, taskhash, tid, self.server))
             else:
                 bb.debug(2, 'No reported unihash for %s:%s from %s' % (tid, taskhash, self.server))
-        except hashserv.HashConnectionError as e:
+        except hashserv.client.HashConnectionError as e:
             bb.warn('Error contacting Hash Equivalence Server %s: %s' % (self.server, str(e)))
 
         self.unitaskhashes[key] = unihash
@@ -504,7 +504,7 @@ class SignatureGeneratorUniHashMixIn(object):
                     bb.event.fire(bb.runqueue.taskUniHashUpdate(fn + ':do_' + task, new_unihash), d)
                 else:
                     bb.debug(1, 'Reported task %s as unihash %s to %s' % (taskhash, unihash, self.server))
-            except hashserv.HashConnectionError as e:
+            except hashserv.client.HashConnectionError as e:
                 bb.warn('Error contacting Hash Equivalence Server %s: %s' % (self.server, str(e)))
         finally:
             if sigfile: