diff --git a/tests/unit/test_fmha_v5.cu b/tests/unit/test_fmha_v5.cu
index 54f48434..cddc687b 100644
--- a/tests/unit/test_fmha_v5.cu
+++ b/tests/unit/test_fmha_v5.cu
@@ -102,7 +102,7 @@ test_fmha_v5(const bf16_t* q, const bf16_t* k, const bf16_t* v,
     // ===== PV GEMM (SS) — per K-tile =====
     {
         uint32_t idesc_pv = make_idesc(BLOCK_MN, HD);
-        for (int kt = 0; kt < NKT_PV; kt++) {
+        for (int kt = 0; kt < 1; kt++) {
             // Fill sPk from s_p_vals[kt*16..kt*16+15]
             for (int i = tid; i < TILE_SZ; i += 128) sPk[i] = 0;
             if (tid < 16) {