diff --git a/modules/hidiffusion/__init__.py b/modules/hidiffusion/__init__.py
index 50a52630a..e8b5f0fd0 100644
--- a/modules/hidiffusion/__init__.py
+++ b/modules/hidiffusion/__init__.py
@@ -10,7 +10,7 @@ def apply_hidiffusion(p, model_type):
         shared.log.warning(f'HiDiffusion: class={shared.sd_model.__class__.__name__} not supported')
         return
     remove_hidiffusion(p)
-    if p.hidiffusion:
+    if getattr(p, 'hidiffusion', False) is True:
         t0 = time.time()
         hidiffusion.is_aggressive_raunet = shared.opts.hidiffusion_steps > 0
         hidiffusion.aggressive_step = shared.opts.hidiffusion_steps
diff --git a/modules/prompt_parser_diffusers.py b/modules/prompt_parser_diffusers.py
index bfe267e2e..7f6b90d6d 100644
--- a/modules/prompt_parser_diffusers.py
+++ b/modules/prompt_parser_diffusers.py
@@ -130,6 +130,8 @@ def get_tokens(msg, prompt):
 
 
 def encode_prompts(pipe, p, prompts: list, negative_prompts: list, steps: int, clip_skip: typing.Optional[int] = None):
+    if getattr(p, 'hidiffusion', False) is True:
+        cache.clear()
     if 'StableDiffusion' not in pipe.__class__.__name__ and 'DemoFusion' not in pipe.__class__.__name__ and 'StableCascade' not in pipe.__class__.__name__:
         shared.log.warning(f"Prompt parser not supported: {pipe.__class__.__name__}")
         return