diff --git a/mission/system/acs/DualLaneAssemblyBase.h b/mission/system/acs/DualLaneAssemblyBase.h
index 4ece59df..2269fd2a 100644
--- a/mission/system/acs/DualLaneAssemblyBase.h
+++ b/mission/system/acs/DualLaneAssemblyBase.h
@@ -47,6 +47,12 @@ class DualLaneAssemblyBase : public AssemblyBase, public ConfirmsFailuresIF {
   } customRecoveryStates = RecoveryCustomStates::IDLE;
 
   MessageQueueIF* eventQueue = nullptr;
+
+  /**
+   * To be called in mode command packer function of the child class.
+   * @param submode
+   * @param needsSecondStep
+   */
   void handleSideSwitchStates(uint8_t& submode, bool& needsSecondStep);
 
   /**