diff --git a/src/freedreno/ir3/ir3_legalize.c b/src/freedreno/ir3/ir3_legalize.c
index b646123abc2..7cb20abcede 100644
--- a/src/freedreno/ir3/ir3_legalize.c
+++ b/src/freedreno/ir3/ir3_legalize.c
@@ -255,6 +255,10 @@ delay_update(struct ir3_legalize_ctx *ctx,
          continue;
 
       for (unsigned elem = 0; elem < elems; elem++, num++) {
+         /* Don't update delays for registers that aren't actually written. */
+         if (!(dst->flags & IR3_REG_RELATIV) && !(dst->wrmask & (1 << elem)))
+            continue;
+
          for (unsigned consumer_alu = 0; consumer_alu < 2; consumer_alu++) {
             for (unsigned matching_size = 0; matching_size < 2; matching_size++) {
                unsigned *ready_slot =