diff --git a/backend/diffusion_engine/base.py b/backend/diffusion_engine/base.py
index a7d72ef2..8ec9509b 100644
--- a/backend/diffusion_engine/base.py
+++ b/backend/diffusion_engine/base.py
@@ -29,19 +29,8 @@ class ForgeDiffusionEngine:
         self.forge_objects_after_applying_lora = None
 
         self.current_lora_hash = str([])
-        self.tiling_enabled = False
 
-        self.first_stage_model = None  # set this so that you can change VAE in UI
-        self.use_distilled_cfg_scale = False
-
-        # WebUI Dirty Legacy
-        self.is_sd1 = False
-        self.is_sd2 = False
-        self.is_sdxl = False
-        self.is_sd3 = False
-
-    def is_webui_legacy_model(self):
-        return self.is_sd1 or self.is_sd2 or self.is_sdxl or self.is_sd3
+        self.fix_for_webui_backward_compatibility()
 
     def set_clip_skip(self, clip_skip):
         pass
@@ -59,4 +48,18 @@ class ForgeDiffusionEngine:
         pass
 
     def get_prompt_lengths_on_ui(self, prompt):
-        pass
+        return 0, 75
+
+    def is_webui_legacy_model(self):
+        return self.is_sd1 or self.is_sd2 or self.is_sdxl or self.is_sd3
+
+    def fix_for_webui_backward_compatibility(self):
+        self.tiling_enabled = False
+        self.first_stage_model = None
+        self.cond_stage_model = None
+        self.use_distilled_cfg_scale = False
+        self.is_sd1 = False
+        self.is_sd2 = False
+        self.is_sdxl = False
+        self.is_sd3 = False
+        return
diff --git a/modules/sd_hijack.py b/modules/sd_hijack.py
index 192810f4..654f576b 100644
--- a/modules/sd_hijack.py
+++ b/modules/sd_hijack.py
@@ -1,41 +1,32 @@
-# class StableDiffusionModelHijack:
-#     fixes = None
-#     layers = None
-#     circular_enabled = False
-#     clip = None
-#     optimization_method = None
-#
-#     def __init__(self):
-#         self.extra_generation_params = {}
-#         self.comments = []
-#
-#     def apply_optimizations(self, option=None):
-#         pass
-#
-#     def convert_sdxl_to_ssd(self, m):
-#         pass
-#
-#     def hijack(self, m):
-#         pass
-#
-#     def undo_hijack(self, m):
-#         pass
-#
-#     def apply_circular(self, enable):
-#         pass
-#
-#     def clear_comments(self):
-#         self.comments = []
-#         self.extra_generation_params = {}
-#
-#     def get_prompt_lengths(self, text, cond_stage_model):
-#         pass
-#
-#     def redo_hijack(self, m):
-#         pass
-#
-#
-# model_hijack = StableDiffusionModelHijack()
+class StableDiffusionModelHijack:
+
+    def apply_optimizations(self, option=None):
+        pass
+
+    def convert_sdxl_to_ssd(self, m):
+        pass
+
+    def hijack(self, m):
+        pass
+
+    def undo_hijack(self, m):
+        pass
+
+    def apply_circular(self, enable):
+        pass
+
+    def clear_comments(self):
+        pass
+
+    def get_prompt_lengths(self, text, cond_stage_model):
+        from modules import shared
+        return shared.sd_model.get_prompt_lengths_on_ui(text)
+
+    def redo_hijack(self, m):
+        pass
+
+
+model_hijack = StableDiffusionModelHijack()
 
 # import torch
 # from torch.nn.functional import silu