diff --git a/server/voice_changer/RVC/RVC.py b/server/voice_changer/RVC/RVC.py
index 96f29c92..62a67a4d 100644
--- a/server/voice_changer/RVC/RVC.py
+++ b/server/voice_changer/RVC/RVC.py
@@ -377,16 +377,18 @@ class RVC:
                 repeat,
                 protect,
             )
-        except DeviceCannotSupportHalfPrecisionException:
+            result = audio_out.detach().cpu().numpy() * np.sqrt(vol)
+
+            return result
+        except DeviceCannotSupportHalfPrecisionException as e:
             print(
                 "[Device Manager] Device cannot support half precision. Fallback to float...."
             )
             self.deviceManager.setForceTensor(True)
             self.prepareModel(self.settings.modelSlotIndex)
+            raise e
 
-        result = audio_out.detach().cpu().numpy() * np.sqrt(vol)
-
-        return result
+        return
 
     def __del__(self):
         del self.pipeline
diff --git a/server/voice_changer/VoiceChanger.py b/server/voice_changer/VoiceChanger.py
index da9376ab..db73333d 100755
--- a/server/voice_changer/VoiceChanger.py
+++ b/server/voice_changer/VoiceChanger.py
@@ -17,6 +17,7 @@ from voice_changer.utils.LoadModelParams import LoadModelParams
 from voice_changer.utils.Timer import Timer
 from voice_changer.utils.VoiceChangerModel import VoiceChangerModel, AudioInOut
 from Exceptions import (
+    DeviceCannotSupportHalfPrecisionException,
     DeviceChangingException,
     HalfPrecisionChangingException,
     NoModeLoadedException,
@@ -580,6 +581,9 @@ class VoiceChanger:
                 "[Voice Changer] Voice Changer is not selected. Wait a bit and if there is no improvement, please re-select vc."
             )
             return np.zeros(1).astype(np.int16), [0, 0, 0]
+        except DeviceCannotSupportHalfPrecisionException:
+            # RVC.pyでfallback処理をするので、ここはダミーデータ返すだけ。
+            return np.zeros(1).astype(np.int16), [0, 0, 0]
         except Exception as e:
             print("[Voice Changer] VC PROCESSING EXCEPTION!!!", e)
             print(traceback.format_exc())