diff --git a/doc/api/index.rst b/doc/api/index.rst
index 385e054..7571889 100644
--- a/doc/api/index.rst
+++ b/doc/api/index.rst
@@ -1,6 +1,5 @@
 API Reference
 =============
-
 .. toctree::
    :maxdepth: 2
    :caption: AML API:
diff --git a/src/openalea/stat_tool/comparison.py b/src/openalea/stat_tool/comparison.py
index 536470b..a444e69 100644
--- a/src/openalea/stat_tool/comparison.py
+++ b/src/openalea/stat_tool/comparison.py
@@ -175,7 +175,6 @@ def ComparisonTest(utype, histo1, histo2):
     coefficients (skewness and kurtosis coefficients). The test statistic is:
 
     .. math::
-
         F_{n_1-1,n_2-1} = \frac
             {
             \frac{\displaystyle\sum_{i=1}^{n_1}\left( x_{1i}-m_1 \right)^2}{n_1-1}
diff --git a/src/wrapper/export_distribution.cpp b/src/wrapper/export_distribution.cpp
index 1adbedc..bc76959 100644
--- a/src/wrapper/export_distribution.cpp
+++ b/src/wrapper/export_distribution.cpp
@@ -491,10 +491,10 @@ void class_discrete_parametric_model()
     	"returns histogram")
 */
     // Output
-    .def("get_plotable", DiscreteParametricModelWrap::get_plotable,
+  .def("get_plotable", DiscreteParametricModelWrap::get_plotable,
     		return_value_policy< manage_new_object >(),
     		"Return a plotable for a list of distribution")
-    .def("get_plotable", &StatInterface::get_plotable,
+  .def("get_plotable", &StatInterface::get_plotable,
     		return_value_policy< manage_new_object >(),
     		"Return a plotable (no parameters)")
 	.def("likelihood", DiscreteParametricModelWrap::likelihood_computation,