diff --git a/inc/dd.h b/inc/dd.h
index 2939e26..0936488 100644
--- a/inc/dd.h
+++ b/inc/dd.h
@@ -16,6 +16,7 @@ HRESULT dd_SetDisplayMode(DWORD dwWidth, DWORD dwHeight, DWORD dwBPP, BOOL setBy
 HRESULT dd_SetCooperativeLevel(HWND hwnd, DWORD dwFlags);
 HRESULT dd_RestoreDisplayMode();
 HRESULT dd_GetCaps(LPDDCAPS lpDDDriverCaps, LPDDCAPS lpDDEmulCaps);
+HRESULT dd_GetCaps(LPDDCAPS_DX1 lpDDDriverCaps, LPDDCAPS_DX1 lpDDEmulCaps);
 HRESULT dd_GetDisplayMode(LPDDSURFACEDESC2 lpDDSurfaceDesc);
 HRESULT dd_GetMonitorFrequency(LPDWORD lpdwFreq);
 HRESULT dd_GetAvailableVidMem(LPDDSCAPS2 lpDDCaps, LPDWORD lpdwTotal, LPDWORD lpdwFree);
diff --git a/src/IDirectDraw/IDirectDraw.c b/src/IDirectDraw/IDirectDraw.c
index c7037be..46f3f5f 100644
--- a/src/IDirectDraw/IDirectDraw.c
+++ b/src/IDirectDraw/IDirectDraw.c
@@ -303,7 +303,7 @@ HRESULT __stdcall IDirectDraw__FlipToGDISurface(IDirectDrawImpl* This)
 HRESULT __stdcall IDirectDraw__GetCaps(IDirectDrawImpl* This, LPDDCAPS lpDDDriverCaps, LPDDCAPS lpDDEmulCaps)
 {
     TRACE("-> %s(This=%p, lpDDDriverCaps=%p, lpDDEmulCaps=%p)\n", __FUNCTION__, This, lpDDDriverCaps, lpDDEmulCaps);
-    HRESULT ret = dd_GetCaps(lpDDDriverCaps, lpDDEmulCaps);
+    HRESULT ret = dd_GetCaps((LPDDCAPS_DX1)lpDDDriverCaps, (LPDDCAPS_DX1)lpDDEmulCaps);
     TRACE("<- %s\n", __FUNCTION__);
     return ret;
 }
diff --git a/src/dd.c b/src/dd.c
index 875240e..c5ff15b 100644
--- a/src/dd.c
+++ b/src/dd.c
@@ -249,11 +249,20 @@ HRESULT dd_EnumDisplayModes(
     return DD_OK;
 }
 
-HRESULT dd_GetCaps(LPDDCAPS lpDDDriverCaps, LPDDCAPS lpDDEmulCaps)
+HRESULT dd_GetCaps(LPDDCAPS_DX1 lpDDDriverCaps, LPDDCAPS_DX1 lpDDEmulCaps)
 {
     if (lpDDDriverCaps)
     {
-        lpDDDriverCaps->dwSize = sizeof(DDCAPS_DX5);
+        int size =
+            lpDDDriverCaps->dwSize == sizeof(DDCAPS_DX3) ? sizeof(DDCAPS_DX3) : 
+            lpDDDriverCaps->dwSize == sizeof(DDCAPS_DX5) ? sizeof(DDCAPS_DX5) : 
+            lpDDDriverCaps->dwSize == sizeof(DDCAPS_DX6) ? sizeof(DDCAPS_DX6) : 
+            lpDDDriverCaps->dwSize == sizeof(DDCAPS_DX7) ? sizeof(DDCAPS_DX7) : 
+            sizeof(DDCAPS_DX1);
+
+        memset(lpDDDriverCaps, 0, size);
+
+        lpDDDriverCaps->dwSize = size;
         lpDDDriverCaps->dwCaps =
             DDCAPS_BLT | 
             DDCAPS_PALETTE | 
@@ -273,12 +282,21 @@ HRESULT dd_GetCaps(LPDDCAPS lpDDDriverCaps, LPDDCAPS lpDDEmulCaps)
         lpDDDriverCaps->dwAlignSizeSrc = 0;
         lpDDDriverCaps->dwAlignBoundaryDest = 0;
         lpDDDriverCaps->dwAlignSizeDest = 0;
-        lpDDDriverCaps->ddsOldCaps.dwCaps = DDSCAPS_FLIP;
+        lpDDDriverCaps->ddsCaps.dwCaps = DDSCAPS_FLIP;
     }
 
     if (lpDDEmulCaps)
     {
-        lpDDEmulCaps->dwSize = 0;
+        int size =
+            lpDDEmulCaps->dwSize == sizeof(DDCAPS_DX3) ? sizeof(DDCAPS_DX3) :
+            lpDDEmulCaps->dwSize == sizeof(DDCAPS_DX5) ? sizeof(DDCAPS_DX5) :
+            lpDDEmulCaps->dwSize == sizeof(DDCAPS_DX6) ? sizeof(DDCAPS_DX6) :
+            lpDDEmulCaps->dwSize == sizeof(DDCAPS_DX7) ? sizeof(DDCAPS_DX7) :
+            sizeof(DDCAPS_DX1);
+
+        memset(lpDDEmulCaps, 0, size);
+
+        lpDDEmulCaps->dwSize = size;
     }
 
     return DD_OK;