diff --git a/modules/images.py b/modules/images.py
index eb644733898..10dcd9ab854 100644
--- a/modules/images.py
+++ b/modules/images.py
@@ -661,7 +661,15 @@ def _atomically_save_image(image_to_save, filename_without_extension, extension)
 
         save_image_with_geninfo(image_to_save, info, temp_file_path, extension, existing_pnginfo=params.pnginfo, pnginfo_section_name=pnginfo_section_name)
 
-        os.replace(temp_file_path, filename_without_extension + extension)
+        full_file_name = filename_without_extension + extension
+        if shared.opts.save_images_add_number_suffix and os.path.exists(full_file_name):
+            count = 1
+            while True:
+                full_file_name = f"{filename_without_extension}_{count}{extension}"
+                if not os.path.exists(full_file_name):
+                    break
+                count += 1
+        os.replace(temp_file_path, full_file_name)
 
     fullfn_without_extension, extension = os.path.splitext(params.filename)
     if hasattr(os, 'statvfs'):
diff --git a/modules/img2img.py b/modules/img2img.py
index c81c7ab9e8c..c1cae22f812 100644
--- a/modules/img2img.py
+++ b/modules/img2img.py
@@ -114,15 +114,17 @@ def process_batch(p, input_dir, output_dir, inpaint_mask_dir, args, to_scale=Fal
             else:
                 p.override_settings.pop("sd_model_checkpoint", None)
 
+        if output_dir:
+            p.outpath_samples = output_dir
+            p.override_settings['save_to_dirs'] = False
+            if p.n_iter > 1 or p.batch_size > 1:
+                p.override_settings['samples_filename_pattern'] = f'{image_path.stem}-[generation_number]'
+            else:
+                p.override_settings['samples_filename_pattern'] = f'{image_path.stem}'
+
         proc = modules.scripts.scripts_img2img.run(p, *args)
+
         if proc is None:
-            if output_dir:
-                p.outpath_samples = output_dir
-                p.override_settings['save_to_dirs'] = False
-                if p.n_iter > 1 or p.batch_size > 1:
-                    p.override_settings['samples_filename_pattern'] = f'{image_path.stem}-[generation_number]'
-                else:
-                    p.override_settings['samples_filename_pattern'] = f'{image_path.stem}'
             process_images(p)
 
 
diff --git a/modules/shared_options.py b/modules/shared_options.py
index 00b273faa54..2f4caa9dd53 100644
--- a/modules/shared_options.py
+++ b/modules/shared_options.py
@@ -26,7 +26,7 @@
     "samples_format": OptionInfo('png', 'File format for images'),
     "samples_filename_pattern": OptionInfo("", "Images filename pattern", component_args=hide_dirs).link("wiki", "https://github.com/AUTOMATIC1111/stable-diffusion-webui/wiki/Custom-Images-Filename-Name-and-Subdirectory"),
     "save_images_add_number": OptionInfo(True, "Add number to filename when saving", component_args=hide_dirs),
-
+    "save_images_add_number_suffix": OptionInfo(True, "Add number suffix when necessary", component_args=hide_dirs).info("prevent existing image from being override"),
     "grid_save": OptionInfo(True, "Always save all generated image grids"),
     "grid_format": OptionInfo('png', 'File format for grids'),
     "grid_extended_filename": OptionInfo(False, "Add extended info (seed, prompt) to filename when saving grid"),