diff --git a/ui/sd_internal/runtime.py b/ui/sd_internal/runtime.py
index bb15e588..7b56a3fd 100644
--- a/ui/sd_internal/runtime.py
+++ b/ui/sd_internal/runtime.py
@@ -616,7 +616,7 @@ Negative Prompt: {req.negative_prompt}
 Stable Diffusion model: {req.use_stable_diffusion_model + '.ckpt'}
 '''
     try:
-        with open(meta_out_path, 'w') as f:
+        with open(meta_out_path, 'w', encoding='utf-8') as f:
             f.write(metadata)
     except:
         print('could not save the file', traceback.format_exc())
diff --git a/ui/server.py b/ui/server.py
index 96a49737..42ae3512 100644
--- a/ui/server.py
+++ b/ui/server.py
@@ -60,7 +60,7 @@ def getConfig(default_val=APP_CONFIG_DEFAULTS):
             mtime = os.path.getmtime(config_json_path)
             if mtime <= config_last_mod_time:
                 return config_cached
-        with open(config_json_path, 'r') as f:
+        with open(config_json_path, 'r', encoding='utf-8') as f:
             config_cached = json.load(f)
         config_last_mod_time = os.path.getmtime(config_json_path)
         return config_cached
@@ -72,7 +72,7 @@ def getConfig(default_val=APP_CONFIG_DEFAULTS):
 def setConfig(config):
     try: # config.json
         config_json_path = os.path.join(CONFIG_DIR, 'config.json')
-        with open(config_json_path, 'w') as f:
+        with open(config_json_path, 'w', encoding='utf-8') as f:
             return json.dump(config, f)
     except:
         print(traceback.format_exc())
@@ -100,7 +100,7 @@ def setConfig(config):
             config_bat.append(f"::@set CUDA_VISIBLE_DEVICES={','.join(gpu_devices)}") # Needs better detection for edge cases, add as a comment for now.
             print('Add the line "@set CUDA_VISIBLE_DEVICES=N" where N is the GPUs to use to config.bat')
         config_bat_path = os.path.join(CONFIG_DIR, 'config.bat')
-        with open(config_bat_path, 'w') as f:
+        with open(config_bat_path, 'w', encoding='utf-8') as f:
             f.write(f.write('\r\n'.join(config_bat)))
     except Exception as e:
         print(traceback.format_exc())
@@ -115,7 +115,7 @@ def setConfig(config):
             config_sh.append(f"#CUDA_VISIBLE_DEVICES={','.join(gpu_devices)}") # Needs better detection for edge cases, add as a comment for now.
             print('Add the line "CUDA_VISIBLE_DEVICES=N" where N is the GPUs to use to config.sh')
         config_sh_path = os.path.join(CONFIG_DIR, 'config.sh')
-        with open(config_sh_path, 'w') as f:
+        with open(config_sh_path, 'w', encoding='utf-8') as f:
             f.write('\n'.join(config_sh))
     except Exception as e:
         print(traceback.format_exc())