diff --git a/revivelib/core_internal_test.go b/revivelib/core_internal_test.go
index 3de7643..ea1f779 100644
--- a/revivelib/core_internal_test.go
+++ b/revivelib/core_internal_test.go
@@ -62,7 +62,7 @@ func getMockRevive(t *testing.T) *Revive {
 		NewExtraRule(&mockRule{}, lint.RuleConfig{}),
 	)
 	if err != nil {
-		t.Fatal(err.Error())
+		t.Fatal(err)
 	}
 
 	return revive
diff --git a/revivelib/core_test.go b/revivelib/core_test.go
index 3e401f6..045711a 100644
--- a/revivelib/core_test.go
+++ b/revivelib/core_test.go
@@ -98,7 +98,7 @@ func getMockRevive(t *testing.T) *revivelib.Revive {
 		revivelib.NewExtraRule(&mockRule{}, lint.RuleConfig{}),
 	)
 	if err != nil {
-		t.Fatal(err.Error())
+		t.Fatal(err)
 	}
 
 	return revive