diff --git a/dlls/wined3d/surface.c b/dlls/wined3d/surface.c
index 6ab04438648..eedc257d6c5 100644
--- a/dlls/wined3d/surface.c
+++ b/dlls/wined3d/surface.c
@@ -2508,7 +2508,7 @@ static HRESULT d3dfmt_convert_surface(const BYTE *src, BYTE *dst, UINT pitch, UI
         }
 
         default:
-            ERR("Unsupported conversation type %d\n", convert);
+            ERR("Unsupported conversion type %#x.\n", convert);
     }
     return WINED3D_OK;
 }