diff --git a/src/arch/arm/mpam.cc b/src/arch/arm/mpam.cc
index b3ba44cfd9..e47b4f80ad 100644
--- a/src/arch/arm/mpam.cc
+++ b/src/arch/arm/mpam.cc
@@ -41,31 +41,31 @@ namespace gem5::ArmISA::mpam
 {
 
 std::unique_ptr<ExtensionBase>
-PartitionFieldExtention::clone() const
+PartitionFieldExtension::clone() const
 {
-    return std::make_unique<PartitionFieldExtention>(*this);
+    return std::make_unique<PartitionFieldExtension>(*this);
 }
 
 uint64_t
-PartitionFieldExtention::getPartitionID() const
+PartitionFieldExtension::getPartitionID() const
 {
     return this->_partitionID;
 }
 
 uint64_t
-PartitionFieldExtention::getPartitionMonitoringID() const
+PartitionFieldExtension::getPartitionMonitoringID() const
 {
     return this->_partitionMonitoringID;
 }
 
 void
-PartitionFieldExtention::setPartitionID(uint64_t id)
+PartitionFieldExtension::setPartitionID(uint64_t id)
 {
     this->_partitionID = id;
 }
 
 void
-PartitionFieldExtention::setPartitionMonitoringID(uint64_t id)
+PartitionFieldExtension::setPartitionMonitoringID(uint64_t id)
 {
     this->_partitionMonitoringID = id;
 }
diff --git a/src/arch/arm/mpam.hh b/src/arch/arm/mpam.hh
index ea34b8a3c7..613a53777c 100644
--- a/src/arch/arm/mpam.hh
+++ b/src/arch/arm/mpam.hh
@@ -48,12 +48,12 @@ namespace gem5::ArmISA::mpam
 const uint64_t DEFAULT_PARTITION_ID = 0;
 const uint64_t DEFAULT_PARTITION_MONITORING_ID = 0;
 
-class PartitionFieldExtention : public Extension<Request,
-                                                 PartitionFieldExtention>
+class PartitionFieldExtension : public Extension<Request,
+                                                 PartitionFieldExtension>
 {
   public:
     std::unique_ptr<ExtensionBase> clone() const override;
-    PartitionFieldExtention() = default;
+    PartitionFieldExtension() = default;
 
     /**
     * _partitionID getter
diff --git a/src/dev/arm/mpam.cc b/src/dev/arm/mpam.cc
index c76673ec61..c530151c6f 100644
--- a/src/dev/arm/mpam.cc
+++ b/src/dev/arm/mpam.cc
@@ -44,8 +44,8 @@ namespace gem5::mpam
 uint64_t
 MSC::readPacketPartitionID(PacketPtr pkt) const
 {
-    // get partition_id from PartitionFieldExtention
-    auto ext = pkt->req->getExtension<ArmISA::mpam::PartitionFieldExtention>();
+    // get partition_id from PartitionFieldExtension
+    auto ext = pkt->req->getExtension<ArmISA::mpam::PartitionFieldExtension>();
     // use default value if extension is not set
     return (ext != nullptr) ? ext->getPartitionID() :
         ArmISA::mpam::DEFAULT_PARTITION_ID;
diff --git a/src/mem/cache/tags/partitioning_policies/base_pp.hh b/src/mem/cache/tags/partitioning_policies/base_pp.hh
index 30dc06d3fe..5ea160c335 100644
--- a/src/mem/cache/tags/partitioning_policies/base_pp.hh
+++ b/src/mem/cache/tags/partitioning_policies/base_pp.hh
@@ -58,7 +58,7 @@ namespace partitioning_policy
  * PartitionID to it. The way the partition ID is attached/extracted
  * from the request depends on the partitioning manager.
  *
- * See the use of the PartitionFieldExtention in Arm as an example.
+ * See the use of the PartitionFieldExtension in Arm as an example.
  *
  * When partitioning policies are in place, the allocatable cache blocks for
  * this memory request will be filtered based on its PartitionID.