diff --git a/test/registered/amd/test_moriep_small.py b/test/registered/amd/test_moriep_small.py
index 42547cf9ecfb..0d073b5f3e30 100644
--- a/test/registered/amd/test_moriep_small.py
+++ b/test/registered/amd/test_moriep_small.py
@@ -400,6 +400,7 @@ def setUpClass(cls):
         env["SGLANG_MORI_DISPATCH_DTYPE"] = "bf16"
         env["SGLANG_MORI_NUM_MAX_DISPATCH_TOKENS_PER_RANK"] = "4096"
         env["MORI_SHMEM_MODE"] = "ISOLATION"  # avoid out of symmetric heap memory
+        env["SGLANG_ENABLE_SPEC_V2"] = "false"
 
         cls.process = popen_launch_server(
             cls.model,
@@ -458,6 +459,7 @@ def setUpClass(cls):
         env["SGLANG_USE_AITER"] = "1"
         env["SGLANG_MORI_DISPATCH_DTYPE"] = "bf16"
         env["SGLANG_MORI_NUM_MAX_DISPATCH_TOKENS_PER_RANK"] = "4096"
+        env["SGLANG_ENABLE_SPEC_V2"] = "false"
         env["MORI_SHMEM_MODE"] = "ISOLATION"  # avoid out of symmetric heap memory
         # FIXME(billishyahao): enable p2p due to no rdma devices on CI machine
         # env["MORI_DISABLE_P2P"] = "1"