diff --git a/ggml/src/ggml-cuda/ssm_scan.cu b/ggml/src/ggml-cuda/ssm_scan.cu
index 357d3eba5..25dfd1ead 100644
--- a/ggml/src/ggml-cuda/ssm_scan.cu
+++ b/ggml/src/ggml-cuda/ssm_scan.cu
@@ -63,26 +63,25 @@ __global__ void __launch_bounds__(splitD, 2)
     __syncthreads();
 
     for (int i = 0; i < L; i++) {
-        float dt_soft_plus = dt_block[i * stride_dt + wid * warpSize + wtid];
+        float dt_soft_plus = dt_block[i * stride_dt + tid];
         if (dt_soft_plus <= 20.0f) {
             dt_soft_plus = log1pf(exp(dt_soft_plus));
         }
-        float x_dt = x_block[i * stride_x + wid * warpSize + wtid] * dt_soft_plus;
+        float x_dt = x_block[i * stride_x + tid] * dt_soft_plus;
         float sumf = 0.0f;
 #pragma unroll
         for (int j = 0; j < N; j++) {
-            float state = (smem_s0[(wid * warpSize + wtid) * stride_ss0 + j] *
-                           expf(dt_soft_plus * smem_A[(wid * warpSize + wtid) * stride_sA + j])) +
+            float state = (smem_s0[tid * stride_ss0 + j] * expf(dt_soft_plus * smem_A[tid * stride_sA + j])) +
                           (B_block[i * stride_B + j] * x_dt);
             sumf += state * C_block[i * stride_C + j];
             if (i == L - 1) {
-                s_block[(wid * warpSize + wtid) * stride_s + j] = state;
+                s_block[tid * stride_s + j] = state;
             } else {
-                smem_s0[(wid * warpSize + wtid) * stride_ss0 + j] = state;
+                smem_s0[tid * stride_ss0 + j] = state;
             }
         }
         __syncthreads();
-        y_block[i * stride_y + wid * warpSize + wtid] = sumf;
+        y_block[i * stride_y + tid] = sumf;
     }
 }