diff --git a/tests/test_helpers/jit_utils.py b/tests/test_helpers/jit_utils.py
index 6a462bc366..c30a9c7964 100644
--- a/tests/test_helpers/jit_utils.py
+++ b/tests/test_helpers/jit_utils.py
@@ -160,6 +160,9 @@ def gen_prefill_attention_modules(
             dtype_q=q_dtype,
             dtype_kv=kv_dtype,
         ):
+            if q_dtype != kv_dtype:
+                continue  # fa3 template do not support mixed precision
+
             jit_specs.append(
                 flashinfer.prefill.gen_single_prefill_module(
                     "fa3",