diff --git a/openmp/libomptarget/include/omptarget.h b/openmp/libomptarget/include/omptarget.h
index 7ba088c1996b..de3afc36c7f2 100644
--- a/openmp/libomptarget/include/omptarget.h
+++ b/openmp/libomptarget/include/omptarget.h
@@ -114,14 +114,10 @@ struct __tgt_target_table {
 /// This struct contains information exchanged between different asynchronous
 /// operations for device-dependent optimization and potential synchronization
 struct __tgt_async_info {
-  // Device ID. Note that it is NOT the RTLDeviceID. We don't need to store the
-  // RTLDeviceID explicitly as we can always get it via DeviceID.
-  int DeviceID = -1;
   // A pointer to a queue-like structure where offloading operations are issued.
-  // We assume to use this structure to do synchronization.
+  // We assume to use this structure to do synchronization. In CUDA backend, it
+  // is CUstream.
   void *Queue = nullptr;
-  // A pointer to a device-dependent event used for synchronization as well.
-  void *Event = nullptr;
 };
 
 #ifdef __cplusplus