diff --git a/src/panfrost/midgard/midgard_ra.c b/src/panfrost/midgard/midgard_ra.c
index e3922639432..dea96086948 100644
--- a/src/panfrost/midgard/midgard_ra.c
+++ b/src/panfrost/midgard/midgard_ra.c
@@ -946,10 +946,15 @@ mir_spill_register(
                         } else {
                                 unsigned dest = spill_index++;
 
-                                if (write_count > 1 && mir_bytemask(ins) != 0xF) {
+                                unsigned bytemask = mir_bytemask(ins);
+                                unsigned write_mask = mir_from_bytemask(mir_round_bytemask_up(
+                                                                           bytemask, 32), 32);
+
+                                if (write_count > 1 && bytemask != 0xFFFF) {
                                         midgard_instruction read =
                                                 v_load_store_scratch(dest, spill_slot, false, 0xF);
                                         mir_insert_instruction_before_scheduled(ctx, block, ins, read);
+                                        write_mask = 0xF;
                                 }
 
                                 ins->dest = dest;
@@ -977,7 +982,7 @@ mir_spill_register(
                                         dest = spill_index++;
 
                                 midgard_instruction st =
-                                        v_load_store_scratch(dest, spill_slot, true, ins->mask);
+                                        v_load_store_scratch(dest, spill_slot, true, write_mask);
                                 mir_insert_instruction_after_scheduled(ctx, block, ins, st);
 
                                 if (move) {