diff --git a/src/fsfw/action/ActionHelper.cpp b/src/fsfw/action/ActionHelper.cpp
index 3e9d121a..85c39f05 100644
--- a/src/fsfw/action/ActionHelper.cpp
+++ b/src/fsfw/action/ActionHelper.cpp
@@ -32,6 +32,17 @@ ReturnValue_t ActionHelper::initialize(MessageQueueIF* queueToUse_) {
         setQueueToUse(queueToUse_);
     }
 
+    if(queueToUse == nullptr) {
+#if FSFW_VERBOSE_LEVEL >= 1
+#if FSFW_CPP_OSTREAM_ENABLED == 1
+        sif::warning << "ActionHelper::initialize: No queue set" << std::endl;
+#else
+        sif::printWarning("ActionHelper::initialize: No queue set\n");
+#endif
+#endif /* FSFW_VERBOSE_LEVEL >= 1 */
+        return HasReturnvaluesIF::RETURN_FAILED;
+    }
+
     return HasReturnvaluesIF::RETURN_OK;
 }
 
diff --git a/src/fsfw/tmtcpacket/SpacePacketBase.cpp b/src/fsfw/tmtcpacket/SpacePacketBase.cpp
index e9a0b836..5dae94c9 100644
--- a/src/fsfw/tmtcpacket/SpacePacketBase.cpp
+++ b/src/fsfw/tmtcpacket/SpacePacketBase.cpp
@@ -54,6 +54,11 @@ void SpacePacketBase::setAPID( uint16_t new_apid ) {
 	this->data->header.packet_id_l = ( new_apid & 0x00FF );
 }
 
+void SpacePacketBase::setSequenceFlags( uint8_t sequenceflags ) {
+    this->data->header.sequence_control_h &= 0x3F;
+    this->data->header.sequence_control_h |= sequenceflags << 6;
+}
+
 uint16_t SpacePacketBase::getPacketSequenceControl( void ) {
 	return ( (this->data->header.sequence_control_h) << 8 )
 		+ this->data->header.sequence_control_l;
diff --git a/src/fsfw/tmtcpacket/SpacePacketBase.h b/src/fsfw/tmtcpacket/SpacePacketBase.h
index 13cb3130..3cd3e552 100644
--- a/src/fsfw/tmtcpacket/SpacePacketBase.h
+++ b/src/fsfw/tmtcpacket/SpacePacketBase.h
@@ -109,6 +109,13 @@ public:
 	 * 			ignored.
 	 */
 	void setAPID( uint16_t setAPID );
+
+	/**
+     * Sets the sequence flags of a packet, which are bit 17 and 18 in the space packet header.
+     * @param   The sequence flags to set
+     */
+    void setSequenceFlags( uint8_t sequenceflags );
+
 	/**
 	 * Returns the CCSDS packet sequence control field, which are the third and
 	 * the fourth byte of the CCSDS primary header.