diff --git a/utils/models/christian_model.py b/utils/models/christian_model.py
index 1adb76e..a277b33 100644
--- a/utils/models/christian_model.py
+++ b/utils/models/christian_model.py
@@ -27,8 +27,8 @@ class ChristianModel(nn.Module):
 
     Args
     ----
-    in_channels : int
-        Number of input channels.
+    image_shape : tuple(int, int, int)
+        Shape of the input image (C, H, W).
     num_classes : int
         Number of classes in the dataset.
 
@@ -49,10 +49,12 @@ class ChristianModel(nn.Module):
     FC Output Shape: (5, num_classes)
     """
 
-    def __init__(self, in_channels, num_classes):
+    def __init__(self, image_shape, num_classes):
         super().__init__()
 
-        self.cnn1 = CNNBlock(in_channels, 50)
+        C, *_ = image_shape
+
+        self.cnn1 = CNNBlock(C, 50)
         self.cnn2 = CNNBlock(50, 100)
 
         self.fc1 = nn.Linear(100 * 4 * 4, num_classes)