diff --git a/chain/vm/runtime.go b/chain/vm/runtime.go
index 595664de1..1b85d5aae 100644
--- a/chain/vm/runtime.go
+++ b/chain/vm/runtime.go
@@ -312,7 +312,7 @@ func (rt *Runtime) Context() context.Context {
 }
 
 func (rt *Runtime) Abortf(code exitcode.ExitCode, msg string, args ...interface{}) {
-	log.Warnf("Abortf: ", fmt.Sprintf(msg, args...))
+	log.Warnf("Abortf: " + fmt.Sprintf(msg, args...))
 	panic(aerrors.NewfSkip(2, code, msg, args...))
 }