diff --git a/modules/swagger-codegen/src/main/resources/swift3/APIs.mustache b/modules/swagger-codegen/src/main/resources/swift3/APIs.mustache
index 1ce9e02e4dd..65294aafe56 100644
--- a/modules/swagger-codegen/src/main/resources/swift3/APIs.mustache
+++ b/modules/swagger-codegen/src/main/resources/swift3/APIs.mustache
@@ -10,7 +10,7 @@ open class {{projectName}}API {
     open static var basePath = "{{{basePath}}}"
     open static var credential: URLCredential?
     open static var customHeaders: [String:String] = [:]
-    static var requestBuilderFactory: RequestBuilderFactory = AlamofireRequestBuilderFactory()
+    open static var requestBuilderFactory: RequestBuilderFactory = AlamofireRequestBuilderFactory()
 }
 
 open class APIBase {
diff --git a/modules/swagger-codegen/src/main/resources/swift3/AlamofireImplementations.mustache b/modules/swagger-codegen/src/main/resources/swift3/AlamofireImplementations.mustache
index 31dc40e1b29..8ef9da6b3b1 100644
--- a/modules/swagger-codegen/src/main/resources/swift3/AlamofireImplementations.mustache
+++ b/modules/swagger-codegen/src/main/resources/swift3/AlamofireImplementations.mustache
@@ -212,7 +212,7 @@ open class AlamofireRequestBuilder<T>: RequestBuilder<T> {
         }
     }
 
-    private func buildHeaders() -> [String: String] {
+    open func buildHeaders() -> [String: String] {
         var httpHeaders = SessionManager.defaultHTTPHeaders
         for (key, value) in self.headers {
             httpHeaders[key] = value