diff --git a/keras/src/layers/preprocessing/category_encoding.py b/keras/src/layers/preprocessing/category_encoding.py
index 4a9fead2152..183debf4990 100644
--- a/keras/src/layers/preprocessing/category_encoding.py
+++ b/keras/src/layers/preprocessing/category_encoding.py
@@ -131,12 +131,12 @@ def compute_output_shape(self, input_shape):
             return (self.num_tokens,)
         if self.output_mode == "one_hot":
             if input_shape[-1] != 1:
-                return tuple(input_shape + (self.num_tokens,))
+                return tuple(input_shape) + (self.num_tokens,)
             elif len(input_shape) == 1:
-                return tuple(input_shape + (self.num_tokens,))
+                return tuple(input_shape) + (self.num_tokens,)
             else:
-                return tuple(input_shape[:-1] + (self.num_tokens,))
-        return tuple(input_shape[:-1] + (self.num_tokens,))
+                return tuple(input_shape[:-1]) + (self.num_tokens,)
+        return tuple(input_shape[:-1]) + (self.num_tokens,)
 
     def compute_output_spec(self, inputs, count_weights=None):
         output_shape = self.compute_output_shape(inputs.shape)