diff --git a/CHANGELOG.md b/CHANGELOG.md
index bc0fa9370..52eabd242 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## Fixes
 
+- DHB `setNormalDatapoolEntriesInvalid`: The default implementation did not set the validity
+  to false correctly because the `read` and `write` calls were missing.
+- PUS TMTC creator module: Sequence flags were set to continuation segment (0b00) instead
+  of the correct unsegmented flags (0b11) as specified in the standard.
 - TC Scheduler Service 11: Add size and CRC check for contained TC.
 - Only delete health table entry in `HealthHelper` destructor if
   health table was set.
diff --git a/src/fsfw/devicehandlers/DeviceHandlerBase.cpp b/src/fsfw/devicehandlers/DeviceHandlerBase.cpp
index 60966501a..bc528128f 100644
--- a/src/fsfw/devicehandlers/DeviceHandlerBase.cpp
+++ b/src/fsfw/devicehandlers/DeviceHandlerBase.cpp
@@ -1,5 +1,6 @@
 #include "fsfw/devicehandlers/DeviceHandlerBase.h"
 
+#include "fsfw/datapool/PoolReadGuard.h"
 #include "fsfw/datapoollocal/LocalPoolVariable.h"
 #include "fsfw/devicehandlers/AcceptsDeviceResponsesIF.h"
 #include "fsfw/devicehandlers/DeviceTmReportingWrapper.h"
@@ -1508,7 +1509,10 @@ DeviceCommandId_t DeviceHandlerBase::getPendingCommand() const {
 void DeviceHandlerBase::setNormalDatapoolEntriesInvalid() {
   for (const auto& reply : deviceReplyMap) {
     if (reply.second.dataSet != nullptr) {
-      reply.second.dataSet->setValidity(false, true);
+      PoolReadGuard pg(reply.second.dataSet);
+      if (pg.getReadResult() == returnvalue::OK) {
+        reply.second.dataSet->setValidity(false, true);
+      }
     }
   }
 }
diff --git a/src/fsfw/tmtcpacket/pus/tc/PusTcCreator.cpp b/src/fsfw/tmtcpacket/pus/tc/PusTcCreator.cpp
index 2c818c7b0..82dd1c411 100644
--- a/src/fsfw/tmtcpacket/pus/tc/PusTcCreator.cpp
+++ b/src/fsfw/tmtcpacket/pus/tc/PusTcCreator.cpp
@@ -100,5 +100,6 @@ ReturnValue_t PusTcCreator::setSerializableUserData(const SerializeIF &serializa
 void PusTcCreator::setup() {
   spCreator.setPacketType(ccsds::PacketType::TC);
   spCreator.setSecHeaderFlag();
+  spCreator.setSeqFlags(ccsds::SequenceFlags::UNSEGMENTED);
   updateSpLengthField();
 }
diff --git a/src/fsfw/tmtcpacket/pus/tm/PusTmCreator.cpp b/src/fsfw/tmtcpacket/pus/tm/PusTmCreator.cpp
index d95a18ea2..c9b3290a7 100644
--- a/src/fsfw/tmtcpacket/pus/tm/PusTmCreator.cpp
+++ b/src/fsfw/tmtcpacket/pus/tm/PusTmCreator.cpp
@@ -119,6 +119,7 @@ void PusTmCreator::setup() {
   updateSpLengthField();
   spCreator.setPacketType(ccsds::PacketType::TM);
   spCreator.setSecHeaderFlag();
+  spCreator.setSeqFlags(ccsds::SequenceFlags::UNSEGMENTED);
 }
 
 void PusTmCreator::setMessageTypeCounter(uint16_t messageTypeCounter) {
diff --git a/unittests/testcfg/devices/logicalAddresses.h b/unittests/testcfg/devices/logicalAddresses.h
index 788c124fa..a7e34cce2 100644
--- a/unittests/testcfg/devices/logicalAddresses.h
+++ b/unittests/testcfg/devices/logicalAddresses.h
@@ -7,7 +7,7 @@
 
 namespace addresses {
 /* Logical addresses have uint32_t datatype */
-enum logicalAddresses : address_t {};
+enum LogicAddress : address_t {};
 }  // namespace addresses
 
 #endif /* CONFIG_DEVICES_LOGICALADDRESSES_H_ */