diff --git a/dlls/kernel32/tests/thread.c b/dlls/kernel32/tests/thread.c
index 001128b466f..334bdf49277 100644
--- a/dlls/kernel32/tests/thread.c
+++ b/dlls/kernel32/tests/thread.c
@@ -1969,6 +1969,7 @@ todo_wine
 
         case ThreadAffinityMask:
         case ThreadQuerySetWin32StartAddress:
+        case ThreadIsIoPending:
 todo_wine
             ok(status == STATUS_ACCESS_DENIED, "for info %u expected STATUS_ACCESS_DENIED, got %08x (ret_len %u)\n", i, status, ret_len);
             break;
diff --git a/dlls/kernel32/thread.c b/dlls/kernel32/thread.c
index 82ccebec8cc..de466185e9c 100644
--- a/dlls/kernel32/thread.c
+++ b/dlls/kernel32/thread.c
@@ -918,8 +918,17 @@ LANGID WINAPI GetThreadUILanguage( void )
  */
 BOOL WINAPI GetThreadIOPendingFlag( HANDLE thread, PBOOL io_pending )
 {
-    FIXME("%p, %p\n", thread, io_pending);
-    *io_pending = FALSE;
+    NTSTATUS status;
+
+    TRACE("%p, %p\n", thread, io_pending);
+
+    status = NtQueryInformationThread( thread, ThreadIsIoPending,
+                                       io_pending, sizeof(*io_pending), NULL );
+    if (status)
+    {
+        SetLastError( RtlNtStatusToDosError(status) );
+        return FALSE;
+    }
     return TRUE;
 }
 
diff --git a/dlls/ntdll/thread.c b/dlls/ntdll/thread.c
index e3cc11ab4f4..c9a5da6226e 100644
--- a/dlls/ntdll/thread.c
+++ b/dlls/ntdll/thread.c
@@ -1157,6 +1157,14 @@ NTSTATUS WINAPI NtQueryInformationThread( HANDLE handle, THREADINFOCLASS class,
             }
         }
         return status;
+    case ThreadIsIoPending:
+        FIXME( "ThreadIsIoPending info class not supported yet\n" );
+        if (length != sizeof(BOOL)) return STATUS_INFO_LENGTH_MISMATCH;
+        if (!data) return STATUS_ACCESS_DENIED;
+
+        *(BOOL*)data = FALSE;
+        if (ret_len) *ret_len = sizeof(BOOL);
+        return STATUS_SUCCESS;
     case ThreadPriority:
     case ThreadBasePriority:
     case ThreadImpersonationToken:
@@ -1167,7 +1175,6 @@ NTSTATUS WINAPI NtQueryInformationThread( HANDLE handle, THREADINFOCLASS class,
     case ThreadIdealProcessor:
     case ThreadPriorityBoost:
     case ThreadSetTlsArrayAddress:
-    case ThreadIsIoPending:
     default:
         FIXME( "info class %d not supported yet\n", class );
         return STATUS_NOT_IMPLEMENTED;