diff --git a/tests/unit/test_fmha_v3_stage_c.py b/tests/unit/test_fmha_v3_stage_c.py
index 6253651f..1403ce2c 100644
--- a/tests/unit/test_fmha_v3_stage_c.py
+++ b/tests/unit/test_fmha_v3_stage_c.py
@@ -224,9 +224,12 @@ class FmhaV3StageCMulti:
             cute.copy(tma_q, tAgQ[(None, Int32(0))], tAsQ[(None, qh.index)], tma_bar_ptr=qh.barrier)
             qp.tail()
             kvp.reset()
-            kv_coord = n_kv_tiles - n_kv_tiles  # SSA runtime zero
+            # Force kv_coord to be a runtime SSA value.
+            # The JIT folds n_kv_tiles - n_kv_tiles and Int32(0) to compile-time constants.
+            # cute.arch.make_warp_uniform(cute.arch.warp_idx()) is a runtime value.
+            # Multiplying by 0 gives a runtime zero the JIT can't constant-fold.
+            kv_coord = cute.arch.make_warp_uniform(cute.arch.warp_idx()) * 0
             for kt in range(n_kv_tiles):
-                cute.printf("TMA kt=%d kv_coord=%d\n", kt, kv_coord)
                 kvh = kvp.acquire_and_advance()
                 cute.copy(tma_k, tBgK[(None, kv_coord)], tBsK[(None, kvh.index)], tma_bar_ptr=kvh.barrier)
                 cute.copy(tma_v, tVgV[(None, kv_coord)], tVsV[(None, kvh.index)], tma_bar_ptr=kvh.barrier)