diff --git a/include/ck_tile/ops/fmha/pipeline/block_fmha_bwd_dq_dk_dv_pipeline_kr_ktr_vr_iglp.hpp b/include/ck_tile/ops/fmha/pipeline/block_fmha_bwd_dq_dk_dv_pipeline_kr_ktr_vr_iglp.hpp
index d1b6e6f85b..420ae03b7e 100644
--- a/include/ck_tile/ops/fmha/pipeline/block_fmha_bwd_dq_dk_dv_pipeline_kr_ktr_vr_iglp.hpp
+++ b/include/ck_tile/ops/fmha/pipeline/block_fmha_bwd_dq_dk_dv_pipeline_kr_ktr_vr_iglp.hpp
@@ -738,6 +738,11 @@ struct BlockFmhaBwdDQDKDVPipelineKRKTRVRIGLP
 
             gemm_3(dk_acc, dst_reg_tensor, qt_reg_tensor);
 
+            if constexpr(kHasBiasGrad)
+            {
+                // SGrad and BiasGrad use the same address in LDS.
+                block_sync_lds();
+            }
             store_tile(ds_lds_window, ds_gemm);
 
             block_sync_lds();
@@ -976,6 +981,12 @@ struct BlockFmhaBwdDQDKDVPipelineKRKTRVRIGLP
                                                   decltype(ds_gemm)>(dst_reg_tensor, ds_gemm);
 
         gemm_3(dk_acc, dst_reg_tensor, qt_reg_tensor);
+
+        if constexpr(kHasBiasGrad)
+        {
+            // SGrad and BiasGrad use the same address in LDS.
+            block_sync_lds();
+        }
         store_tile(ds_lds_window, ds_gemm);
 
         block_sync_lds();