diff --git a/hysop/backend/device/opencl/opencl_array_backend.py b/hysop/backend/device/opencl/opencl_array_backend.py
index 58a90acc1705db6221b2c6c1b301ae5f0f46f151..0bc155f9380f46cb1e8af17cbcaf38f4a210c119 100644
--- a/hysop/backend/device/opencl/opencl_array_backend.py
+++ b/hysop/backend/device/opencl/opencl_array_backend.py
@@ -757,7 +757,7 @@ class OpenClArrayBackend(ArrayBackend):
             Kernel=_ElementwiseKernel,
             kernel_build_kwargs=None, kernel_call_kwargs=None,
             build_kernel_launcher=False):
-        """
+        r"""
         Build and call kernel that takes:
                  n read-only scalars or OpenClArray as input arguments xi,
                  m OpenClArray as output arguments yi,
@@ -2304,7 +2304,7 @@ class OpenClArrayBackend(ArrayBackend):
 
     def cumprod(self, a, axis=None, dtype=None, out=None,
             queue=None):
-        """
+        r"""
         Return the cumulative product of elements along a given axis.
         /!\ precision loss because of operation ordering
         """
@@ -2319,7 +2319,7 @@ class OpenClArrayBackend(ArrayBackend):
                 neutral='0', scan_expr='a+b', queue=queue)
     def nancumprod(self, a, axis=None, dtype=None, out=None,
             queue=None):
-        """
+        r"""
         Return the cumulative product of array elements over a given axis treating
         Not a Numbers (NaNs) as one.
         /!\ precision loss because of operation ordering
diff --git a/hysop/fields/cartesian_discrete_field.py b/hysop/fields/cartesian_discrete_field.py
index 3128bd4f67d5d0efd7908236d43095f52c1f3b88..3601f1c80a3691bafce0e0a55f926dda6be49579 100644
--- a/hysop/fields/cartesian_discrete_field.py
+++ b/hysop/fields/cartesian_discrete_field.py
@@ -1105,7 +1105,7 @@ class CartesianDiscreteScalarFieldView(CartesianDiscreteScalarFieldViewContainer
                         grid_resolution=None, ghosts=None, tstate=None,
                         lboundaries=None, rboundaries=None,
                         register_discrete_field=False, **kwds):
-        """
+        r"""
         Create a new Field and a new temporary CartesianDiscreteScalarField.
         like the current object, possibly on a different backend.
         /!\ The returned discrete field is not allocated.
diff --git a/hysop/fields/continuous_field.py b/hysop/fields/continuous_field.py
index a6339c78a0a62434e1c37247e5820f544172ca93..e055b27c8a909ff104d71f43bb184efbe3837d5c 100644
--- a/hysop/fields/continuous_field.py
+++ b/hysop/fields/continuous_field.py
@@ -532,7 +532,7 @@ class ScalarField(NamedScalarContainerI, FieldContainerI):
                 initial_values=None, dtype=HYSOP_REAL,
                 lboundaries=None, rboundaries=None,
                 is_tmp=False, mem_tag=None, **kwds):
-        """
+        r"""
         Create or get an existing continuous ScalarField (scalar or vector) on a specific domain.
 
         Parameters
diff --git a/hysop/fields/discrete_field.py b/hysop/fields/discrete_field.py
index c8ebd79ef82bf16f6ff6dedebf1c1993b5d97521..d3babc3a02cdba3dde4ed7e8d4b38207e7da7c2b 100644
--- a/hysop/fields/discrete_field.py
+++ b/hysop/fields/discrete_field.py
@@ -125,7 +125,7 @@ class DiscreteScalarFieldViewContainerI(object, metaclass=ABCMeta):
 
     @abstractmethod
     def tmp_dfield_like(self, name, **kwds):
-        """
+        r"""
         Create a new Field container and a new temporary CartesianDiscreteField.
         like the current object, possibly on a different backend.
         /!\ The returned discrete field is not allocated.
@@ -270,7 +270,7 @@ class DiscreteScalarFieldViewContainerI(object, metaclass=ABCMeta):
             objects[idx] = obj
 
     def has_unique_attribute(self, *attr):
-        """
+        r"""
         Return true if all contained discrete fields share the same attribute
         (as stated by the == comparisson operator).
 
@@ -326,7 +326,7 @@ class DiscreteScalarFieldViewContainerI(object, metaclass=ABCMeta):
         return self.has_unique_attribute('dtype')
 
     def get_unique_attribute(self, *attr):
-        """
+        r"""
         Try to return the unique attribute common to all contained discrete fields.
         Raise an AttributeError if a attribute is not unique accross contained
         discrete field views.
@@ -926,7 +926,7 @@ class DiscreteTensorField(NamedTensorContainerI, DiscreteScalarFieldViewContaine
                                         **kwds)
 
     def tmp_dfield_like(self, name, pretty_name=None, **kwds):
-        """
+        r"""
         Create a new Field container and a new temporary CartesianDiscreteField.
         like the current object, possibly on a different backend.
         /!\ The returned discrete field is not allocated.
diff --git a/hysop/testsenv.py b/hysop/testsenv.py
index 7aab91f1ba7fa9caea0f4fcfa314423e17f5d12d..d368c36333ea13e209a1e8c843e80198fd575f3c 100644
--- a/hysop/testsenv.py
+++ b/hysop/testsenv.py
@@ -178,7 +178,7 @@ class postclean(object):
 
 
 class TestCartesianField(object):
-    """
+    r"""
     Generate data layouts like cartesian fields (only for testing purposes).
 
     This is usefull to test operators internals without the need