diff --git a/hello_wolf/processor_range_bearing.cpp b/hello_wolf/processor_range_bearing.cpp
index d43badcc30cf7a733652278f0c01b4de16fc9882..5d74436cfabf7b25051a2bfbc25ae01623cfe9c7 100644
--- a/hello_wolf/processor_range_bearing.cpp
+++ b/hello_wolf/processor_range_bearing.cpp
@@ -15,7 +15,7 @@ namespace wolf
 {
 
 ProcessorRangeBearing::ProcessorRangeBearing(ProcessorParamsBasePtr _params) :
-        ProcessorBase("RANGE BEARING", _params)
+        ProcessorBase("ProcessorRangeBearing", _params)
 {
     //
 }
diff --git a/hello_wolf/sensor_range_bearing.cpp b/hello_wolf/sensor_range_bearing.cpp
index a6de52e908944ce0c9a9ad5e5560e7a687efa796..93d8c624c49207d1e70dcf4c9ef5c80dd2f4b971 100644
--- a/hello_wolf/sensor_range_bearing.cpp
+++ b/hello_wolf/sensor_range_bearing.cpp
@@ -14,7 +14,7 @@ namespace wolf
 WOLF_PTR_TYPEDEFS(SensorRangeBearing);
 
 SensorRangeBearing::SensorRangeBearing(const Eigen::VectorXs& _extrinsics, const Eigen::Vector2s& _noise_std) :
-        SensorBase("RANGE BEARING",
+        SensorBase("SensorRangeBearing",
                    std::make_shared<StateBlock>(_extrinsics.head<2>(), true),
                    std::make_shared<StateAngle>(_extrinsics(2), true),
                    nullptr,
diff --git a/include/core/yaml/parser_yaml.hpp b/include/core/yaml/parser_yaml.hpp
index 99c1c8c10180318e3a84f0e307ef80be97d85c76..b4dd578252bbf357809a69dae625538add0b0e37 100644
--- a/include/core/yaml/parser_yaml.hpp
+++ b/include/core/yaml/parser_yaml.hpp
@@ -355,6 +355,8 @@ void ParserYAML::walkTreeR(YAML::Node n, std::vector<std::string>& tags, std::st
       }
         break;
     }
+      case YAML::NodeType::Null :
+        break;
     default:
         assert(1 == 0 && "Unsupported node Type at walkTreeR.");
         break;