diff --git a/mission/tmtc/CfdpTmFunnel.cpp b/mission/tmtc/CfdpTmFunnel.cpp
index 268d2d3f..daf53925 100644
--- a/mission/tmtc/CfdpTmFunnel.cpp
+++ b/mission/tmtc/CfdpTmFunnel.cpp
@@ -66,7 +66,7 @@ ReturnValue_t CfdpTmFunnel::handlePacket(TmTcMessage& msg) {
   auto spacePacketHeader =
       SpacePacketCreator(ccsds::PacketType::TM, false, cfdpInCcsdsApid,
                          ccsds::SequenceFlags::UNSEGMENTED, sourceSequenceCount++, 0);
-  sourceSequenceCount = sourceSequenceCount & ccsds::LIMIT_SEQUENCE_COUNT;
+  sourceSequenceCount = sourceSequenceCount % ccsds::LIMIT_SEQUENCE_COUNT;
   spacePacketHeader.setCcsdsLenFromTotalDataFieldLen(cfdpPacketLen);
   uint8_t* newPacketData = nullptr;
   store_address_t newStoreId{};