diff --git a/generate.py b/generate.py
index 739de46..c567440 100644
--- a/generate.py
+++ b/generate.py
@@ -949,7 +949,8 @@ def generate(args):
         if args.enable_teacache:
             wan_t2v.__class__.generate = t2v_generate
             wan_t2v.model.__class__.enable_teacache = True
-            wan_t2v.model.__class__.forward = teacache_forward
+            if args.ulysses_size * args.ring_size == 1: # not conflict with fsdp
+                wan_t2v.model.__class__.forward = teacache_forward
             wan_t2v.model.__class__.cnt = 0
             wan_t2v.model.__class__.num_steps = args.sample_steps*2
             wan_t2v.model.__class__.teacache_thresh = args.teacache_thresh