diff --git a/projects/clr/rocclr/device/rocm/rocvirtual.cpp b/projects/clr/rocclr/device/rocm/rocvirtual.cpp
index 4913c05a61..8dbdcd794d 100644
--- a/projects/clr/rocclr/device/rocm/rocvirtual.cpp
+++ b/projects/clr/rocclr/device/rocm/rocvirtual.cpp
@@ -1431,24 +1431,32 @@ VirtualGPU::VirtualGPU(Device& device, bool profiling, bool cooperative,
   profiling_ = profiling;
   cooperative_ = cooperative;
 
+  constexpr uint16_t kernelDispatchHBits =
+      (HSA_PACKET_TYPE_KERNEL_DISPATCH << HSA_PACKET_HEADER_TYPE);
+  constexpr uint16_t barrierHBits = (1 << HSA_PACKET_HEADER_BARRIER);
+  constexpr uint16_t agentScopeHBits =
+      (HSA_FENCE_SCOPE_AGENT << HSA_PACKET_HEADER_SCACQUIRE_FENCE_SCOPE) |
+      (HSA_FENCE_SCOPE_AGENT << HSA_PACKET_HEADER_SCRELEASE_FENCE_SCOPE);
+  constexpr uint16_t systemScopeHBits =
+      (HSA_FENCE_SCOPE_SYSTEM << HSA_PACKET_HEADER_SCACQUIRE_FENCE_SCOPE) |
+      (HSA_FENCE_SCOPE_SYSTEM << HSA_PACKET_HEADER_SCRELEASE_FENCE_SCOPE);
+  // acquire=SYSTEM, release=AGENT (needed for GFX12)
+  constexpr uint16_t sysAcquireAgentReleaseHBits =
+      (HSA_FENCE_SCOPE_SYSTEM << HSA_PACKET_HEADER_SCACQUIRE_FENCE_SCOPE) |
+      (HSA_FENCE_SCOPE_AGENT << HSA_PACKET_HEADER_SCRELEASE_FENCE_SCOPE);
+
   if (device.settings().fenceScopeAgent_) {
+    const auto& isa = device.isa();
+    const bool isGfx12 = (isa.versionMajor() == 12) && (isa.versionMinor() == 0) &&
+                         (isa.versionStepping() == 0 || isa.versionStepping() == 1);
+
     dispatchPacketHeaderNoSync_ =
-        (HSA_PACKET_TYPE_KERNEL_DISPATCH << HSA_PACKET_HEADER_TYPE) |
-        (HSA_FENCE_SCOPE_AGENT << HSA_PACKET_HEADER_SCACQUIRE_FENCE_SCOPE) |
-        (HSA_FENCE_SCOPE_AGENT << HSA_PACKET_HEADER_SCRELEASE_FENCE_SCOPE);
-    dispatchPacketHeader_ = (HSA_PACKET_TYPE_KERNEL_DISPATCH << HSA_PACKET_HEADER_TYPE) |
-                            (1 << HSA_PACKET_HEADER_BARRIER) |
-                            (HSA_FENCE_SCOPE_AGENT << HSA_PACKET_HEADER_SCACQUIRE_FENCE_SCOPE) |
-                            (HSA_FENCE_SCOPE_AGENT << HSA_PACKET_HEADER_SCRELEASE_FENCE_SCOPE);
+        (kernelDispatchHBits | (isGfx12 ? sysAcquireAgentReleaseHBits : agentScopeHBits));
+    dispatchPacketHeader_ = (kernelDispatchHBits | barrierHBits |
+                             (isGfx12 ? sysAcquireAgentReleaseHBits : agentScopeHBits));
   } else {
-    dispatchPacketHeaderNoSync_ =
-        (HSA_PACKET_TYPE_KERNEL_DISPATCH << HSA_PACKET_HEADER_TYPE) |
-        (HSA_FENCE_SCOPE_SYSTEM << HSA_PACKET_HEADER_SCACQUIRE_FENCE_SCOPE) |
-        (HSA_FENCE_SCOPE_SYSTEM << HSA_PACKET_HEADER_SCRELEASE_FENCE_SCOPE);
-    dispatchPacketHeader_ = (HSA_PACKET_TYPE_KERNEL_DISPATCH << HSA_PACKET_HEADER_TYPE) |
-                            (1 << HSA_PACKET_HEADER_BARRIER) |
-                            (HSA_FENCE_SCOPE_SYSTEM << HSA_PACKET_HEADER_SCACQUIRE_FENCE_SCOPE) |
-                            (HSA_FENCE_SCOPE_SYSTEM << HSA_PACKET_HEADER_SCRELEASE_FENCE_SCOPE);
+    dispatchPacketHeaderNoSync_ = (kernelDispatchHBits | systemScopeHBits);
+    dispatchPacketHeader_ = (kernelDispatchHBits | barrierHBits | systemScopeHBits);
   }
 
   aqlHeader_ = dispatchPacketHeader_;