diff --git a/inc/dd.h b/inc/dd.h
index ac31d23..6742a3e 100644
--- a/inc/dd.h
+++ b/inc/dd.h
@@ -138,6 +138,7 @@ typedef struct CNCDDRAW
     BOOL novidmem;
     BOOL fpupreserve;
     BOOL allow_wmactivate;
+    int d3d9_adapter;
     BOOL accurate_timers;
     BOOL resizable;
     BOOL nonexclusive;
diff --git a/src/config.c b/src/config.c
index 6d87ab8..19f7a5f 100644
--- a/src/config.c
+++ b/src/config.c
@@ -50,6 +50,7 @@ void cfg_load()
     g_ddraw->resolutions = cfg_get_int("resolutions", RESLIST_NORMAL);
     g_ddraw->fpupreserve = cfg_get_bool("fpupreserve", FALSE);
     g_ddraw->allow_wmactivate = cfg_get_bool("allow_wmactivate", FALSE);
+    g_ddraw->d3d9_adapter = cfg_get_int("d3d9_adapter", 0);
     cfg_get_string("screenshotdir", ".\\Screenshots\\", g_ddraw->screenshot_dir, sizeof(g_ddraw->screenshot_dir));
 
     if (g_ddraw->locktopleft)
@@ -350,6 +351,7 @@ static void cfg_create_ini()
             "\n"
             "\n"
             "; Undocumented settings\n"
+            "d3d9_adapter=0\n"
             "d3d9on12=false\n"
             "game_handles_close=false\n"
             "accuratetimers=false\n"
diff --git a/src/render_d3d9.c b/src/render_d3d9.c
index 2db1336..01c1b5a 100644
--- a/src/render_d3d9.c
+++ b/src/render_d3d9.c
@@ -78,7 +78,7 @@ BOOL d3d9_create()
         {
 #if _DEBUG 
             D3DADAPTER_IDENTIFIER9 ai = {0};
-            const HRESULT hr = IDirect3D9_GetAdapterIdentifier(g_d3d9.instance, 0, 0, &ai);
+            const HRESULT hr = IDirect3D9_GetAdapterIdentifier(g_d3d9.instance, g_ddraw->d3d9_adapter, 0, &ai);
 
             if (SUCCEEDED(hr)) 
             {
@@ -124,7 +124,7 @@ BOOL d3d9_create()
                 if (SUCCEEDED(
                     IDirect3D9_CreateDevice(
                         g_d3d9.instance,
-                        D3DADAPTER_DEFAULT,
+                        g_ddraw->d3d9_adapter,
                         D3DDEVTYPE_HAL,
                         g_ddraw->hwnd,
                         behavior_flags[i] | (g_ddraw->fpupreserve ? D3DCREATE_FPU_PRESERVE : 0),