diff --git a/src/mesa/state_tracker/st_atom_blend.c b/src/mesa/state_tracker/st_atom_blend.c
index 426dc0211a9..4b73856b493 100644
--- a/src/mesa/state_tracker/st_atom_blend.c
+++ b/src/mesa/state_tracker/st_atom_blend.c
@@ -304,8 +304,8 @@ void
 st_update_blend_color(struct st_context *st)
 {
    struct pipe_context *pipe = st->pipe;
-   struct pipe_blend_color bc;
+   struct pipe_blend_color *bc =
+      (struct pipe_blend_color *)st->ctx->Color.BlendColorUnclamped;
 
-   COPY_4FV(bc.color, st->ctx->Color.BlendColorUnclamped);
-   pipe->set_blend_color(pipe, &bc);
+   pipe->set_blend_color(pipe, bc);
 }