diff --git a/src/processor_imu.cpp b/src/processor_imu.cpp
index 4943314918e82395e790612fcf03c9ebd7b2cd0f..052e8ff8bb26345f1a422958fa4dd476ccf91b29 100644
--- a/src/processor_imu.cpp
+++ b/src/processor_imu.cpp
@@ -234,7 +234,7 @@ void ProcessorIMU::computeCurrentDelta(const Eigen::VectorXs& _data,
     assert(_data.size() == data_size_ && "Wrong data size!");
 
     using namespace Eigen;
-    Matrix<Scalar, 9, 6> jac_data;
+    Matrix<Scalar, 9, 6> jac_delta_data;
 
     /*
      * We have the following computing pipeline:
@@ -255,13 +255,13 @@ void ProcessorIMU::computeCurrentDelta(const Eigen::VectorXs& _data,
      */
 
     // create delta
-    imu::body2delta(_data - _calib, _dt, _delta, jac_data); // Jacobians tested in imu_tools
+    imu::body2delta(_data - _calib, _dt, _delta, jac_delta_data); // Jacobians tested in imu_tools
 
     // compute delta_cov
-    _delta_cov = jac_data * _data_cov * jac_data.transpose();
+    _delta_cov = jac_delta_data * _data_cov * jac_delta_data.transpose();
 
     // compute jacobian_calib
-    _jac_delta_calib = - jac_data;
+    _jac_delta_calib = - jac_delta_data;
 
 }
 
diff --git a/src/processor_motion.cpp b/src/processor_motion.cpp
index 9b5ac64ebf90d8760725271d6d21128303d1bcae..a8e94f2432955dc03d0068f8f9f46a4079d7cb78 100644
--- a/src/processor_motion.cpp
+++ b/src/processor_motion.cpp
@@ -296,7 +296,7 @@ bool ProcessorMotion::keyFrameCallback(FrameBasePtr _new_keyframe, const Scalar&
 //    reintegrateBuffer(new_capture);
 
     // create motion constraint and add it to the feature, and constrain to the other capture (origin)
-    emplaceConstraint(new_feature, keyframe_origin->getCaptureOf(getSensorPtr()) ); // XXX it was new_keyframe_origin
+    emplaceConstraint(new_feature, keyframe_origin->getCaptureOf(getSensorPtr()) );