diff --git a/3rdparty/trt_fused_multihead_attention/fused_multihead_attention_v2.h b/3rdparty/trt_fused_multihead_attention/fused_multihead_attention_v2.h
index f04e74ade..dbe76e5d3 100644
--- a/3rdparty/trt_fused_multihead_attention/fused_multihead_attention_v2.h
+++ b/3rdparty/trt_fused_multihead_attention/fused_multihead_attention_v2.h
@@ -5390,8 +5390,8 @@ class FusedMultiHeadAttentionXMMAKernelV2:
 
     virtual uint64_t hashID(const KernelMeta& kernelMeta) const
     {
-        assert(kernelMeta.mD == 64 || kernelMeta.mD == 32 || kernel.mD == 40 || kernel.mD == 80 || kernel.mD == 128
-               || kernel.mD == 160 || kernel.mD == 256);
+        assert(kernelMeta.mD == 64 || kernelMeta.mD == 32 || kernelMeta.mD == 40 || kernelMeta.mD == 80 || kernelMeta.mD == 128
+               || kernelMeta.mD == 160 || kernelMeta.mD == 256);
         return hashID(kernelMeta.mS,
                       kernelMeta.mD,
                       kernelMeta.mInterleaved,
diff --git a/3rdparty/trt_fused_multihead_attention/qkvToContext.cu b/3rdparty/trt_fused_multihead_attention/qkvToContext.cu
index bce5af3e3..54a07c022 100644
--- a/3rdparty/trt_fused_multihead_attention/qkvToContext.cu
+++ b/3rdparty/trt_fused_multihead_attention/qkvToContext.cu
@@ -94,7 +94,9 @@ public:
                 warps_n = 8;
             }
             else {
-                assert(false && "Unsupporte seqlen");
+                // S >= 512, flash attention
+                warps_m = 4;
+                warps_n = 1;
             }
         }
         else {
@@ -111,7 +113,9 @@ public:
                 warps_n = 8;
             }
             else {
-                assert(false && "Unsupporte seqlen");
+                // S >= 512, flash attention
+                warps_m = 4;
+                warps_n = 1;
             }
         }
         // The number of threads per CTA.