diff --git a/example/ck_tile/18_hstu_attention/example_hstu_attention.cpp b/example/ck_tile/18_hstu_attention/example_hstu_attention.cpp
index 996b651041..6dc5bb8443 100644
--- a/example/ck_tile/18_hstu_attention/example_hstu_attention.cpp
+++ b/example/ck_tile/18_hstu_attention/example_hstu_attention.cpp
@@ -163,8 +163,8 @@ static void show_hstu_attention_fwd_param(std::ostream& os, HstuAttentionFwdPara
 template <typename DataType>
 auto get_elimit()
 {
-    double rtol = 1e-2;
-    double atol = 1e-2;
+    double rtol = 1e-3;
+    double atol = 1e-3;
 
     return ck_tile::make_tuple(rtol, atol);
 }
@@ -172,8 +172,8 @@ auto get_elimit()
 template <>
 auto get_elimit<ck_tile::bf16_t>()
 {
-    double rtol = 2e-2;
-    double atol = 2e-2;
+    double rtol = 2e-3;
+    double atol = 2e-3;
     return ck_tile::make_tuple(rtol, atol);
 }
 
@@ -475,7 +475,8 @@ bool run(const ck_tile::ArgParser& arg_parser)
         // dumpBufferToFile("output_host.dat", o_host_ref.data(), o_host.get_element_space_size());
 
         if(save_mask)
-            dumpBufferToFile("ck_hstu_mask.dat", mask_host.data(), mask_host.get_element_space_size());
+            dumpBufferToFile(
+                "ck_hstu_mask.dat", mask_host.data(), mask_host.get_element_space_size());
 
         auto [rtol, atol] = get_elimit<InOutDataType>();