Error initialization FGuid member var of struct

When I cook or package, I’ve got a warning about initialization of struct member.

LogInit: Display: LogClass: Warning: FKCharacterAlteration::Guid is not initialized properly
LogInit: Display: LogAutomationTest: Warning: FKCharacterAlteration::Guid is not initialized properly

The Guid member var is FGuid type.

USTRUCT(BlueprintType)
struct FKCharacterAlteration
{
	GENERATED_USTRUCT_BODY()

public:
	/** @brief Unique identifier for this alteration */
	UPROPERTY()
	FGuid Guid;
	/** @brief The alteration type. */
	UPROPERTY(EditDefaultsOnly, Category = "Alterations")
	EKCharacterAlterationTypeEnum AlterationType;
	/** @brief The alteration value. */
	UPROPERTY(EditDefaultsOnly, Category = "Alterations")
	float Value;
	/** @brief The alteration duration. */
	UPROPERTY(EditDefaultsOnly, Category = "Alterations")
	float Duration;
	/** @brief timestamp for removing message */
	UPROPERTY()
	float HideTime;
	/** @brief Last hit time. */
	UPROPERTY()
	float HitTime;
private:
	/** A rolling counter used to ensure the struct is dirty and will replicate. */
	UPROPERTY()
	uint8 EnsureReplicationByte;

public:
	/** @brief Initialize defaults.     
	 */
	FKCharacterAlteration()
		: AlterationType(EKCharacterAlterationTypeEnum::KCA_Undefined)
		, Value(0.f)
		, Duration(0.f)
		, HideTime(0.f)
		, HitTime(0.f)
		, EnsureReplicationByte(0)
	{
		Guid = FGuid::NewGuid();
	}

	/**
	* @brief Constructor.
	*
	* @param alterationGuid	 The unique identifier for the alteration.
	* @param alterationType  Type of the alteration.
	* @param time			 The time.
	* @param value			 The value of the alteration.
	* @param duration		 The duration.
	*/
	FKCharacterAlteration(const FGuid& alterationGuid, EKCharacterAlterationTypeEnum alterationType, float time = 0.0f, float value = 0.0f, float duration = 0.0f)
		: Guid(alterationGuid)
		, AlterationType(alterationType)
		, Value(value)
		, Duration(duration)
		, HideTime(time + duration)
		, HitTime(time)
		, EnsureReplicationByte(0)
	{
		Guid = alterationGuid;
	}
.....
}

How can I get rid of this warning message?

Txs,
D.