diff --git a/libraries/AP_HAL/HAL.h b/libraries/AP_HAL/HAL.h
index 723e68f64f..a2bef78e47 100644
--- a/libraries/AP_HAL/HAL.h
+++ b/libraries/AP_HAL/HAL.h
@@ -67,9 +67,6 @@ public:
         scheduler(_scheduler),
         util(_util),
         opticalflow(_opticalflow),
-#if AP_SIM_ENABLED && CONFIG_HAL_BOARD != HAL_BOARD_SITL
-        simstate(_simstate),
-#endif
         flash(_flash),
 #if HAL_WITH_DSP
         dsp(_dsp),
@@ -85,6 +82,9 @@ public:
             _serial7,
             _serial8,
             _serial9}
+#if AP_SIM_ENABLED && CONFIG_HAL_BOARD != HAL_BOARD_SITL
+            ,simstate(_simstate)
+#endif
     {
 #if HAL_NUM_CAN_IFACES > 0
         if (_can_ifaces == nullptr) {