diff --git a/lib/hypervisor/hv_kvm.py b/lib/hypervisor/hv_kvm.py
index 788d3ddc87024e0aef57ebbe66c10412eed32da5..262a6feaf70624ac6286687698a954443315d78d 100644
--- a/lib/hypervisor/hv_kvm.py
+++ b/lib/hypervisor/hv_kvm.py
@@ -506,7 +506,7 @@ class KVMHypervisor(hv_base.BaseHypervisor):
                                     result.output))
 
     if not utils.IsProcessAlive(utils.ReadPidFile(pidfile)):
-      raise errors.HypervisorError("Failed to start instance %s: %s" %
+      raise errors.HypervisorError("Failed to start instance %s" %
                                    (instance.name))
 
     if vnc_pwd: