diff --git a/src/easyscience/Datasets/xarray.py b/src/easyscience/Datasets/xarray.py
index 0fbe4755..b179f69f 100644
--- a/src/easyscience/Datasets/xarray.py
+++ b/src/easyscience/Datasets/xarray.py
@@ -281,7 +281,7 @@ def sigma_generator(
 
         :param variable_label: Name of the DataArray to perform the calculation on
         :type variable_label: str
-        :param sigma_func: Function to generate the sigmas. Must be of the form f(x) and return an array of the same shape as the input. Default sqrt(\|x\|)
+        :param sigma_func: Function to generate the sigmas. Must be of the form f(x) and return an array of the same shape as the input. Default sqrt(\\|x\\|)
         :type sigma_func: Callable
         :param label_prefix: What prefix should be used to designate a sigma DataArray from a data DataArray
         :type label_prefix: str