diff --git a/db/capes/files/repository.go b/db/capes/files/repository.go
index 0c70e31..ce16c4d 100644
--- a/db/capes/files/repository.go
+++ b/db/capes/files/repository.go
@@ -14,6 +14,10 @@ type filesDb struct {
 
 func (repository *filesDb) FindByUsername(username string) (model.Cape, error) {
 	var record model.Cape
+	if username == "" {
+		return record, CapeNotFoundError{username}
+	}
+
 	capePath := path.Join(repository.path, strings.ToLower(username) + ".png")
 	file, err := os.Open(capePath)
 	if err != nil {
diff --git a/db/skins/redis/commands.go b/db/skins/redis/commands.go
index 75f9ad7..4ac3298 100644
--- a/db/skins/redis/commands.go
+++ b/db/skins/redis/commands.go
@@ -18,6 +18,10 @@ const accountIdToUsernameKey string = "hash:username-to-account-id"
 
 func (db *redisDb) FindByUsername(username string) (model.Skin, error) {
 	var record model.Skin
+	if username == "" {
+		return record, SkinNotFoundError{username}
+	}
+
 	redisKey := buildKey(username)
 	response := db.conn.Cmd("GET", redisKey)
 	if response.IsType(redis.Nil) {