diff --git a/simulation/halsim_ds_socket/src/test/native/cpp/DSCommPacketTest.cpp b/simulation/halsim_ds_socket/src/test/native/cpp/DSCommPacketTest.cpp
index 91190fba19..c1fc2932b9 100644
--- a/simulation/halsim_ds_socket/src/test/native/cpp/DSCommPacketTest.cpp
+++ b/simulation/halsim_ds_socket/src/test/native/cpp/DSCommPacketTest.cpp
@@ -67,9 +67,9 @@ TEST_F(DSCommPacketTest, BlankJoystickTag) {
 TEST_F(DSCommPacketTest, MainJoystickTag) {
   for (int i = 0; i < HAL_kMaxJoysticks; i++) {
     // Just random data
-    std::array<uint8_t, 12> _buttons{0, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1};
+    std::array<uint8_t, 12> _buttons{{0, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 1}};
 
-    std::array<uint8_t, 2> _button_bytes{0, 0};
+    std::array<uint8_t, 2> _button_bytes{{0, 0}};
     for (int btn = 0; btn < 8; btn++) _button_bytes[1] |= _buttons[btn] << btn;
     for (int btn = 8; btn < 12; btn++)
       _button_bytes[0] |= _buttons[btn] << (btn - 8);