diff --git a/modules/processing.py b/modules/processing.py
index 96f56b0d..23ee5e02 100644
--- a/modules/processing.py
+++ b/modules/processing.py
@@ -770,7 +770,7 @@ class StableDiffusionProcessingImg2Img(StableDiffusionProcessing):
             conditioning_mask = conditioning_mask.to(image.device)
 
             conditioning_image = image
-            if shared.opts.inpainting_mask_image:
+            if getattr(self, "inpainting_mask_image", shared.opts.inpainting_mask_image):
                 conditioning_image = conditioning_image * (1.0 - conditioning_mask)                
             
             conditioning_image = self.sd_model.get_first_stage_encoding(self.sd_model.encode_first_stage(conditioning_image))
diff --git a/scripts/xy_grid.py b/scripts/xy_grid.py
index eff0c942..0843adcc 100644
--- a/scripts/xy_grid.py
+++ b/scripts/xy_grid.py
@@ -153,6 +153,8 @@ def str_permutations(x):
     """dummy function for specifying it in AxisOption's type when you want to get a list of permutations"""
     return x
 
+def str_to_bool(x):
+    return "true" in x.lower().strip()
 
 AxisOption = namedtuple("AxisOption", ["label", "type", "apply", "format_value", "confirm"])
 AxisOptionImg2Img = namedtuple("AxisOptionImg2Img", ["label", "type", "apply", "format_value", "confirm"])
@@ -178,6 +180,7 @@ axis_options = [
     AxisOption("Eta", float, apply_field("eta"), format_value_add_label, None),
     AxisOption("Clip skip", int, apply_clip_skip, format_value_add_label, None),
     AxisOption("Denoising", float, apply_field("denoising_strength"), format_value_add_label, None),
+    AxisOption("Mask Conditioning Image", str_to_bool, apply_field("inpainting_mask_image"), format_value_add_label, None),
 ]