diff --git a/aiia_audio_enhance.py b/aiia_audio_enhance.py
index a0675b1..7598a19 100644
--- a/aiia_audio_enhance.py
+++ b/aiia_audio_enhance.py
@@ -404,8 +404,8 @@ class AIIA_Audio_Enhance:
                          # For now, I'll set lambd=0.5 (default) or 1.0?
                          # The library default is 0.5.
                          
-                         _cached_enhancer.configurate_(nfe=nfe, solver=solver, lambd=0.5, tau=tau)
-                         print(f"[AIIA DEBUG] Configured model: nfe={nfe}, solver={solver}, tau={tau}")
+                         _cached_enhancer.configurate_(nfe=nfe, solver=solver.lower(), lambd=0.5, tau=tau)
+                         print(f"[AIIA DEBUG] Configured model: nfe={nfe}, solver={solver.lower()}, tau={tau}")
                     except Exception as e:
                          print(f"[AIIA WARNING] configurate_ failed: {e}")
                 else:
diff --git a/pyproject.toml b/pyproject.toml
index 591381d..c5b76b1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,7 +1,7 @@
 [project]
 name = "aiia"
 description = "A suite of powerful, intuitive, and highly customizable nodes for ComfyUI, featuring a high-performance Media Browser and OOM-safe video tools."
-version = "1.4.77"
+version = "1.4.78"
 license = {file = "LICENSE"}
 readme = "README.md"
 authors = [