diff --git a/projects/clr/rocclr/device/pal/palvirtual.cpp b/projects/clr/rocclr/device/pal/palvirtual.cpp
index a9a05d0e25..234ef67882 100644
--- a/projects/clr/rocclr/device/pal/palvirtual.cpp
+++ b/projects/clr/rocclr/device/pal/palvirtual.cpp
@@ -2812,6 +2812,7 @@ void VirtualGPU::submitExternalSemaphoreCmd(amd::ExternalSemaphoreCmd& cmd) {
 
   if (cmd.semaphoreCmd() ==
       amd::ExternalSemaphoreCmd::COMMAND_SIGNAL_EXTSEMAPHORE) {
+    flushDMA(MainEngine);
     queues_[MainEngine]->iQueue_->SignalQueueSemaphore(const_cast<Pal::IQueueSemaphore*>(sem),
                                                        cmd.fence());
   } else {
diff --git a/projects/clr/rocclr/platform/command.hpp b/projects/clr/rocclr/platform/command.hpp
index 6409fc08b7..b45c9067ae 100644
--- a/projects/clr/rocclr/platform/command.hpp
+++ b/projects/clr/rocclr/platform/command.hpp
@@ -1223,8 +1223,7 @@ class ExternalSemaphoreCmd : public Command {
  public:
   ExternalSemaphoreCmd(HostQueue& queue, const void* sem_ptr, uint64_t fence,
                        ExternalSemaphoreCmdType cmd_type)
-      : Command::Command(queue, CL_COMMAND_USER, nullWaitList, cmd_type == COMMAND_SIGNAL_EXTSEMAPHORE ? 1 : 0),
-        sem_ptr_(sem_ptr), fence_(fence), cmd_type_(cmd_type) {}
+      : Command::Command(queue, CL_COMMAND_USER), sem_ptr_(sem_ptr), fence_(fence), cmd_type_(cmd_type) {}
 
   virtual void submit(device::VirtualDevice& device) {
     device.submitExternalSemaphoreCmd(*this);