diff --git a/pkg/core/transaction/witness_scope.go b/pkg/core/transaction/witness_scope.go
index c1cf2b7d8..5c60e983b 100644
--- a/pkg/core/transaction/witness_scope.go
+++ b/pkg/core/transaction/witness_scope.go
@@ -68,7 +68,7 @@ func ScopesFromString(s string) (WitnessScope, error) {
 			return result, fmt.Errorf("invalid witness scope: %v", scopeStr)
 		}
 		if isGlobal && !(scope == Global) {
-			return result, fmt.Errorf("Global scope can not be combined with other scopes")
+			return result, errors.New("Global scope can not be combined with other scopes")
 		}
 		result |= scope
 		if scope == Global {