diff --git a/cmd/mochi/main.go b/cmd/mochi/main.go
index dda96c9..094cd79 100644
--- a/cmd/mochi/main.go
+++ b/cmd/mochi/main.go
@@ -103,7 +103,7 @@ func (r *Run) Start(ps storage.Storage) error {
 }
 
 func combineErrors(prefix string, errs []error) error {
-	var errStrs []string
+	errStrs := make([]string, 0, len(errs))
 	for _, err := range errs {
 		errStrs = append(errStrs, err.Error())
 	}
diff --git a/middleware/logic_test.go b/middleware/logic_test.go
index fb1cc9a..ba36fa3 100644
--- a/middleware/logic_test.go
+++ b/middleware/logic_test.go
@@ -70,7 +70,7 @@ func BenchmarkHookOverhead(b *testing.B) {
 		benchHookListV6(b, hookList{})
 	})
 
-	var nopHooks hookList
+	nopHooks := make(hookList, 0, 4)
 	for i := 1; i < 4; i++ {
 		nopHooks = append(nopHooks, &nopHook{})
 		b.Run(fmt.Sprintf("%dnop-v4", i), func(b *testing.B) {