diff --git a/CMakeLists.txt b/CMakeLists.txt
index ab398cc..390fa77 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -6,7 +6,7 @@ cmake_minimum_required (VERSION 2.8.11)
 project (cpp-jwt)
 
 #SET (CMAKE_CXX_COMPILER /usr/local/bin/g++)
-SET( CMAKE_CXX_FLAGS  "-std=c++14" )
+SET( CMAKE_CXX_FLAGS  "-std=c++14 -Wall" )
 
 include_directories (include)
 
diff --git a/tests/test_jwt_encode.cc b/tests/test_jwt_encode.cc
index 0580b2c..ccb7584 100644
--- a/tests/test_jwt_encode.cc
+++ b/tests/test_jwt_encode.cc
@@ -278,7 +278,7 @@ TEST (EncodeTest, HeaderParamTest)
   bool ret = obj.header().add_header("kid", 1234567);
   EXPECT_TRUE (ret);
 
-  ret = obj.header().add_header("crit", std::array<std::string, 1>{"exp"});
+  ret = obj.header().add_header("crit", std::array<std::string, 1>{ {"exp"} });
   EXPECT_TRUE (ret);
 
   std::cout << obj.header() << std::endl;