diff --git a/dlls/wined3d/surface.c b/dlls/wined3d/surface.c
index 7af21b4e462..5d325122918 100644
--- a/dlls/wined3d/surface.c
+++ b/dlls/wined3d/surface.c
@@ -4800,14 +4800,6 @@ void flip_surface(struct wined3d_surface *front, struct wined3d_surface *back)
         back->pbo = tmp_pbo;
     }
 
-    /* client_memory should not be different, but just in case */
-    {
-        BOOL tmp;
-        tmp = front->dib.client_memory;
-        front->dib.client_memory = back->dib.client_memory;
-        back->dib.client_memory = tmp;
-    }
-
     /* Flip the opengl texture */
     {
         GLuint tmp;
diff --git a/dlls/wined3d/swapchain.c b/dlls/wined3d/swapchain.c
index 7d7be5be1b7..a02a189dfc1 100644
--- a/dlls/wined3d/swapchain.c
+++ b/dlls/wined3d/swapchain.c
@@ -787,14 +787,6 @@ static HRESULT swapchain_gdi_present(struct wined3d_swapchain *swapchain, const
             ERR("GDI Surface %p has heap memory allocated.\n", back);
     }
 
-    /* Client_memory should not be different, but just in case. */
-    {
-        BOOL tmp;
-        tmp = front->dib.client_memory;
-        front->dib.client_memory = back->dib.client_memory;
-        back->dib.client_memory = tmp;
-    }
-
     /* FPS support */
     if (TRACE_ON(fps))
     {
diff --git a/dlls/wined3d/wined3d_private.h b/dlls/wined3d/wined3d_private.h
index e81ff88dd4b..d573d9fcffd 100644
--- a/dlls/wined3d/wined3d_private.h
+++ b/dlls/wined3d/wined3d_private.h
@@ -1949,7 +1949,6 @@ typedef struct wineD3DSurface_DIB {
     HBITMAP DIBsection;
     void* bitmap_data;
     UINT bitmap_size;
-    BOOL client_memory;
 } wineD3DSurface_DIB;
 
 struct wined3d_renderbuffer_entry