diff --git a/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c b/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c
index 3e19fad064..ba7f5a5f77 100644
--- a/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c
+++ b/MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDisk.c
@@ -3700,6 +3700,8 @@ ScsiDiskAsyncRead10 (
   SCSI_ASYNC_RW_REQUEST        *Request;
   EFI_EVENT                    AsyncIoEvent;
 
+  AsyncIoEvent = NULL;
+
   Request = AllocateZeroPool (sizeof (SCSI_ASYNC_RW_REQUEST));
   if (Request == NULL) {
     return EFI_OUT_OF_RESOURCES;
@@ -3755,6 +3757,10 @@ ScsiDiskAsyncRead10 (
   return EFI_SUCCESS;
 
 ErrorExit:
+  if (AsyncIoEvent != NULL) {
+    gBS->CloseEvent (AsyncIoEvent);
+  }
+
   if (Request != NULL) {
     if (Request->SenseData != NULL) {
       FreePool (Request->SenseData);
@@ -3803,6 +3809,8 @@ ScsiDiskAsyncWrite10 (
   SCSI_ASYNC_RW_REQUEST        *Request;
   EFI_EVENT                    AsyncIoEvent;
 
+  AsyncIoEvent = NULL;
+
   Request = AllocateZeroPool (sizeof (SCSI_ASYNC_RW_REQUEST));
   if (Request == NULL) {
     return EFI_OUT_OF_RESOURCES;
@@ -3858,6 +3866,10 @@ ScsiDiskAsyncWrite10 (
   return EFI_SUCCESS;
 
 ErrorExit:
+  if (AsyncIoEvent != NULL) {
+    gBS->CloseEvent (AsyncIoEvent);
+  }
+
   if (Request != NULL) {
     if (Request->SenseData != NULL) {
       FreePool (Request->SenseData);
@@ -3906,6 +3918,8 @@ ScsiDiskAsyncRead16 (
   SCSI_ASYNC_RW_REQUEST        *Request;
   EFI_EVENT                    AsyncIoEvent;
 
+  AsyncIoEvent = NULL;
+
   Request = AllocateZeroPool (sizeof (SCSI_ASYNC_RW_REQUEST));
   if (Request == NULL) {
     return EFI_OUT_OF_RESOURCES;
@@ -3961,6 +3975,10 @@ ScsiDiskAsyncRead16 (
   return EFI_SUCCESS;
 
 ErrorExit:
+  if (AsyncIoEvent != NULL) {
+    gBS->CloseEvent (AsyncIoEvent);
+  }
+
   if (Request != NULL) {
     if (Request->SenseData != NULL) {
       FreePool (Request->SenseData);
@@ -4009,6 +4027,8 @@ ScsiDiskAsyncWrite16 (
   SCSI_ASYNC_RW_REQUEST        *Request;
   EFI_EVENT                    AsyncIoEvent;
 
+  AsyncIoEvent = NULL;
+
   Request = AllocateZeroPool (sizeof (SCSI_ASYNC_RW_REQUEST));
   if (Request == NULL) {
     return EFI_OUT_OF_RESOURCES;
@@ -4064,6 +4084,10 @@ ScsiDiskAsyncWrite16 (
   return EFI_SUCCESS;
 
 ErrorExit:
+  if (AsyncIoEvent != NULL) {
+    gBS->CloseEvent (AsyncIoEvent);
+  }
+
   if (Request != NULL) {
     if (Request->SenseData != NULL) {
       FreePool (Request->SenseData);