diff --git a/runtime/hsa-runtime/core/inc/amd_gpu_agent.h b/runtime/hsa-runtime/core/inc/amd_gpu_agent.h
index e45a165e97..d49c4fdd8a 100644
--- a/runtime/hsa-runtime/core/inc/amd_gpu_agent.h
+++ b/runtime/hsa-runtime/core/inc/amd_gpu_agent.h
@@ -76,7 +76,7 @@ class GpuAgentInt : public core::Agent {
   // @param [in] node_id Node id.
   // @param [in] driver_type Driver type. Default is KFD.
   GpuAgentInt(uint32_t node_id, core::DriverType driver_type)
-      : core::Agent(core::Runtime::runtime_singleton_->AgentDriver(driver_type), node_id, 
+      : core::Agent(core::Runtime::runtime_singleton_->AgentDriver(driver_type), node_id,
       core::Agent::DeviceType::kAmdGpuDevice) {}
 
    // @brief Ensure blits are ready (performance hint).
@@ -725,9 +725,6 @@ class GpuAgent : public GpuAgentInt {
   // @brief Alternative aperture base address. Only on KV.
   uintptr_t ape1_base_;
 
-  // @brief Alternative aperture size. Only on KV.
-  size_t ape1_size_;
-
   // @brief Queue with GWS access.
   struct {
     lazy_ptr<core::Queue> queue_;
diff --git a/runtime/hsa-runtime/core/runtime/amd_gpu_agent.cpp b/runtime/hsa-runtime/core/runtime/amd_gpu_agent.cpp
index 3b830af294..fdcff3a18f 100644
--- a/runtime/hsa-runtime/core/runtime/amd_gpu_agent.cpp
+++ b/runtime/hsa-runtime/core/runtime/amd_gpu_agent.cpp
@@ -106,7 +106,6 @@ GpuAgent::GpuAgent(HSAuint32 node, const HsaNodeProperties& node_props, bool xna
       memory_max_frequency_(0),
       enum_index_(index),
       ape1_base_(0),
-      ape1_size_(0),
       pending_copy_req_ref_(0),
       pending_copy_stat_check_ref_(0),
       sdma_blit_used_mask_(0),