diff --git a/src/mesa/state_tracker/st_draw_hw_select.c b/src/mesa/state_tracker/st_draw_hw_select.c
index 9a4fc9ddcd1..150983ab162 100644
--- a/src/mesa/state_tracker/st_draw_hw_select.c
+++ b/src/mesa/state_tracker/st_draw_hw_select.c
@@ -391,7 +391,7 @@ update_result_buffer(nir_builder *b, nir_def *dmin, nir_def *dmax,
 {
    nir_def *offset;
    if (offset_from_attribute) {
-      offset = nir_load_per_vertex_input(b, 4, 32, nir_imm_int(b, 0),
+      offset = nir_load_per_vertex_input(b, 1, 32, nir_imm_int(b, 0),
                                          nir_imm_int(b, 0),
                                          .io_semantics.location = VARYING_SLOT_VAR0);
    } else {