diff --git a/store/memory.go b/store/memory.go
index 94e38438..79a78293 100644
--- a/store/memory.go
+++ b/store/memory.go
@@ -70,19 +70,19 @@ func (m *memoryStore) delete(prefix, key string) {
 
 func (m *memoryStore) list(prefix string, limit, offset uint) []string {
 	allItems := m.store.Items()
-	allKeys := make([]string, len(allItems))
-	i := 0
+	allKeys := make([]string, 0, len(allItems))
 
 	for k := range allItems {
 		if !strings.HasPrefix(k, prefix) {
 			continue
 		}
-		allKeys[i] = strings.TrimPrefix(k, prefix)
-		if allKeys[i][0] == '/' {
-			allKeys[i] = allKeys[i][1:]
+		k = strings.TrimPrefix(k, prefix)
+		if k[0] == '/' {
+			k = k[1:]
 		}
-		i++
+		allKeys = append(allKeys, k)
 	}
+
 	if limit != 0 || offset != 0 {
 		sort.Slice(allKeys, func(i, j int) bool { return allKeys[i] < allKeys[j] })
 		sort.Slice(allKeys, func(i, j int) bool { return allKeys[i] < allKeys[j] })
@@ -99,7 +99,6 @@ func (m *memoryStore) list(prefix string, limit, offset uint) []string {
 		}
 		return allKeys[offset:end]
 	}
-
 	return allKeys
 }