diff --git a/render/picture.c b/render/picture.c
index 18bfea29b..48693b8ef 100644
--- a/render/picture.c
+++ b/render/picture.c
@@ -1115,7 +1115,7 @@ ChangePicture (PicturePtr	pPicture,
 			if (error != Success)
 			{
 			    client->errorValue = pid;
-			    error = (error == BadValue) ? BadPixmap : error;
+			    error = (error == BadValue) ? RenderErrBase + BadPicture : error;
 			    break;
 			}
 			if (pAlpha->pDrawable == NULL ||