diff --git a/src/dev/amdgpu/amdgpu_device.cc b/src/dev/amdgpu/amdgpu_device.cc
index f58d1f7242..7037e6fb1c 100644
--- a/src/dev/amdgpu/amdgpu_device.cc
+++ b/src/dev/amdgpu/amdgpu_device.cc
@@ -604,7 +604,7 @@ AMDGPUDevice::serialize(CheckpointOut &cp) const
     idx = 0;
     for (auto & it : sdmaEngs) {
         sdma_engs_offset[idx] = it.first;
-        sdma_engs[idx] = idx;
+        sdma_engs[idx] = it.second->getId();
         ++idx;
     }
 
@@ -675,8 +675,9 @@ AMDGPUDevice::unserialize(CheckpointIn &cp)
         UNSERIALIZE_ARRAY(sdma_engs, sizeof(sdma_engs)/sizeof(sdma_engs[0]));
 
         for (int idx = 0; idx < sdma_engs_size; ++idx) {
-            assert(sdmaIds.count(idx));
-            SDMAEngine *sdma = sdmaIds[idx];
+            int sdma_id = sdma_engs[idx];
+            assert(sdmaIds.count(sdma_id));
+            SDMAEngine *sdma = sdmaIds[sdma_id];
             sdmaEngs.insert(std::make_pair(sdma_engs_offset[idx], sdma));
         }
     }
diff --git a/src/dev/amdgpu/sdma_engine.hh b/src/dev/amdgpu/sdma_engine.hh
index 1e4f965920..bcbd497e8a 100644
--- a/src/dev/amdgpu/sdma_engine.hh
+++ b/src/dev/amdgpu/sdma_engine.hh
@@ -165,6 +165,7 @@ class SDMAEngine : public DmaVirtDevice
     void setGPUDevice(AMDGPUDevice *gpu_device);
 
     void setId(int _id) { id = _id; }
+    int getId() const { return id; }
     /**
      * Returns the client id for the Interrupt Handler.
      */