diff --git a/dlls/d3d10/effect.c b/dlls/d3d10/effect.c
index 48df10acff5..71468bd4d3c 100644
--- a/dlls/d3d10/effect.c
+++ b/dlls/d3d10/effect.c
@@ -774,7 +774,7 @@ static HRESULT parse_fx10_shader(const char *data, size_t data_size, DWORD offse
             break;
 
         case D3D10_SVT_GEOMETRYSHADER:
-            if (v->type->flags & D3D10_EOT_FLAG_GS_SO)
+            if (v->u.shader.stream_output_declaration)
             {
                 struct d3d10_effect_so_decl so_decl;