diff --git a/inc/dd.h b/inc/dd.h
index d77962f..cb0ffc5 100644
--- a/inc/dd.h
+++ b/inc/dd.h
@@ -173,7 +173,7 @@ typedef struct CNCDDRAW
     BOOL show_driver_warning;
     SPEEDLIMITER ticks_limiter;
     SPEEDLIMITER flip_limiter;
-    DWORD gui_thread;
+    DWORD gui_thread_id;
 
 } CNCDDRAW;
 
diff --git a/src/dd.c b/src/dd.c
index fbe90ec..81e7bac 100644
--- a/src/dd.c
+++ b/src/dd.c
@@ -890,7 +890,7 @@ HRESULT dd_SetCooperativeLevel(HWND hwnd, DWORD dwFlags)
         hook_init();
 
         g_ddraw->wndproc = (WNDPROC)real_SetWindowLongA(g_ddraw->hwnd, GWL_WNDPROC, (LONG)fake_WndProc);
-        g_ddraw->gui_thread = GetWindowThreadProcessId(g_ddraw->hwnd, NULL);
+        g_ddraw->gui_thread_id = GetWindowThreadProcessId(g_ddraw->hwnd, NULL);
 
         if (!g_ddraw->render.hdc)
         {
diff --git a/src/utils.c b/src/utils.c
index 40937d7..4aef256 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -62,7 +62,7 @@ BOOL util_is_avx_supported()
 
 void util_limit_game_ticks()
 {
-    if (GetCurrentThreadId() != g_ddraw->gui_thread)
+    if (GetCurrentThreadId() != g_ddraw->gui_thread_id)
         return;
 
     if (g_ddraw->ticks_limiter.htimer)