diff --git a/src/eigenpy.cpp b/src/eigenpy.cpp
index 25bd51aa3711056be27aabfdeda7265f712333f2..9d7490e3875d0acc464f7a8477babeea575575e2 100644
--- a/src/eigenpy.cpp
+++ b/src/eigenpy.cpp
@@ -16,7 +16,7 @@ namespace eigenpy
     
     bp::def("setNumpyType",&NumpyType::setNumpyType,
             bp::arg("Numpy type (np.ndarray or np.matrix)"),
-            "Change the type returned by the converters from an Eigen object.");
+            "Change the Numpy type returned by the converters from an Eigen object.");
             
     bp::def("getNumpyType",&NumpyType::getNumpyType,
             "Get the Numpy type returned by the converters from an Eigen object.");