diff --git a/tmtcpacket/pus/TcPacketBase.h b/tmtcpacket/pus/TcPacketBase.h
index aee801e7..582a2214 100644
--- a/tmtcpacket/pus/TcPacketBase.h
+++ b/tmtcpacket/pus/TcPacketBase.h
@@ -46,18 +46,21 @@ public:
 	        sizeof(PUSTcDataFieldHeader) + 2);
 
 	enum AckField {
-	    //! Acknowledgements on all levels are expected.
-	    ACK_ALL = 0b1111,
-	    //! Acknowledgements on acceptance are expected.
-	    ACK_ACCEPTANCE = 0b0001,
-	    //! Acknowledgements on start are expected.
-	    ACK_START = 0b0010,
-	    //! Acknowledgements on step are expected.
-	    ACK_STEP = 0b0100,
-	    //! No acknowledgements are expected.
-	    ACK_NONE = 0b0000
+		//! No acknowledgements are expected.
+		ACK_NONE = 0b0000,
+		//! Acknowledgements on acceptance are expected.
+		ACK_ACCEPTANCE = 0b0001,
+		//! Acknowledgements on start are expected.
+		ACK_START = 0b0010,
+		//! Acknowledgements on step are expected.
+		ACK_STEP = 0b0100,
+		//! Acknowledfgement on completion are expected.
+		ACK_COMPLETION = 0b1000
 	};
 
+	static constexpr uint8_t ACK_ALL = ACK_ACCEPTANCE | ACK_START | ACK_STEP |
+			ACK_COMPLETION;
+
 	/**
 	 * This is the default constructor.
 	 * It sets its internal data pointer to the address passed and also
diff --git a/tmtcpacket/pus/TcPacketStored.h b/tmtcpacket/pus/TcPacketStored.h
index 4a8f11d2..1666107b 100644
--- a/tmtcpacket/pus/TcPacketStored.h
+++ b/tmtcpacket/pus/TcPacketStored.h
@@ -46,7 +46,7 @@ public:
 	 */
 	TcPacketStored(uint16_t apid, uint8_t service, uint8_t subservice,
 			uint8_t sequence_count = 0, const uint8_t* data = nullptr,
-			size_t size = 0, uint8_t ack = TcPacketBase::AckField::ACK_ALL);
+			size_t size = 0, uint8_t ack = TcPacketBase::ACK_ALL);
 	/**
 	 * Another constructor to create a TcPacket from a raw packet stream.
 	 * Takes the data and adds it unchecked to the TcStore.