diff --git a/Project_Timer/Data/API/API.swift b/Project_Timer/Data/API/API.swift
index db58ffd1..0a2358f0 100644
--- a/Project_Timer/Data/API/API.swift
+++ b/Project_Timer/Data/API/API.swift
@@ -10,7 +10,7 @@ import Foundation
 import Moya
 
 extension TargetType {
-    static func parameters(from encodable: Encodable) -> [String: Any] {
+    func parameters(from encodable: Encodable) -> [String: Any] {
         let encoder = JSONEncoder()
         guard let data = try? encoder.encode(encodable),
               let dictionary = try? JSONSerialization.jsonObject(with: data, options: .allowFragments) as? [String: Any] else {
diff --git a/Project_Timer/Data/API/AuthAPI.swift b/Project_Timer/Data/API/AuthAPI.swift
index dd2fecce..b5092e2d 100644
--- a/Project_Timer/Data/API/AuthAPI.swift
+++ b/Project_Timer/Data/API/AuthAPI.swift
@@ -51,9 +51,9 @@ extension AuthAPI: TargetType {
         case .postSignin(let request):
             return .requestJSONEncodable(request)
         case .getCheckUsername(let request):
-            return .requestParameters(parameters: Self.parameters(from: request), encoding: URLEncoding.queryString)
+            return .requestParameters(parameters: self.parameters(from: request), encoding: URLEncoding.queryString)
         case .getCheckEmail(let request):
-            return .requestParameters(parameters: Self.parameters(from: request), encoding: URLEncoding.queryString)
+            return .requestParameters(parameters: self.parameters(from: request), encoding: URLEncoding.queryString)
         case .postUpdatePassword(let request):
             return .requestJSONEncodable(request)
         }