diff --git a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
index 5cb794b5fd1..cea16e0b325 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_visitor.cpp
@@ -840,7 +840,9 @@ void fs_visitor::compute_clip_distance(gl_clip_plane *clip_planes)
    const fs_builder abld = bld.annotate("user clip distances");
 
    this->outputs[VARYING_SLOT_CLIP_DIST0] = vgrf(glsl_type::vec4_type);
+   this->output_components[VARYING_SLOT_CLIP_DIST0] = 4;
    this->outputs[VARYING_SLOT_CLIP_DIST1] = vgrf(glsl_type::vec4_type);
+   this->output_components[VARYING_SLOT_CLIP_DIST1] = 4;
 
    for (int i = 0; i < key->nr_userclip_plane_consts; i++) {
       fs_reg u = userplane[i];