diff --git a/python/sglang/srt/utils.py b/python/sglang/srt/utils.py
index 8a191588c..dd5e45a20 100644
--- a/python/sglang/srt/utils.py
+++ b/python/sglang/srt/utils.py
@@ -1930,6 +1930,7 @@ def is_fa3_default_architecture(hf_config):
         "Llama4ForConditionalGeneration",
         "LlamaForCausalLM",
         "MistralForCausalLM",
+        "Gemma2ForCausalLM",
     }
     return architectures[0] in default_archs