diff --git a/Makefile b/Makefile
index 6d2af4e..f672665 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@ PGM = r.in.kinect
 
 LIBES = $(IMAGERYLIB) $(RASTERLIB) $(INTERPFLLIB) $(QTREELIB) $(QTREEDEP) $(GMATHLIB) $(INTERPDATALIB) $(VECTORLIB) $(DBMILIB) $(GISLIB) $(OMPLIB) -rdynamic  /usr/local/lib/libfreenect2.so  -lpcl_common -Wl,-Bstatic -lflann_cpp_s -Wl,-Bdynamic -lpcl_io -lpcl_kdtree -lpcl_octree -lpcl_search -lpcl_surface -lpcl_sample_consensus  -lpcl_filters -lpcl_features -lpcl_keypoints  -lpcl_segmentation -lpcl_tracking -lboost_system -lpthread  -Wl,-Bdynamic   /usr/lib/x86_64-linux-gnu/libopencv_core.so -ldl -Wl,-rpath,/usr/local/lib
 DEPENDENCIES = $(IMAGERYDEP) $(RASTERDEP) $(INTERPFLDEP) $(QTREEDEP) $(INTERPDATADEP) $(GMATHDEP) $(VECTORDEP) $(DBMIDEP) $(GISDEP)
-EXTRA_INC = $(VECT_INC) -I/usr/include/opencv4 -I/usr/local/include/pcl-1.11 -I/usr/include/eigen3
+EXTRA_INC = $(VECT_INC) -I/usr/include/opencv4 -I/usr/local/include/pcl-1.13 -I/usr/include/eigen3
 EXTRA_CFLAGS = -std=c++14 -march=native  -Wno-deprecated -O0 $(VECT_CFLAGS) $(OMPCFLAGS)
 
 include $(MODULE_TOPDIR)/include/Make/Module.make
diff --git a/calibrate.h b/calibrate.h
index 3c5745e..aa767a8 100644
--- a/calibrate.h
+++ b/calibrate.h
@@ -1,6 +1,7 @@
 #ifndef CALIBRATE_H
 #define CALIBRATE_H
 
+#undef n_
 #include <math.h>
 #include <tuple>
 #include <pcl/segmentation/extract_clusters.h>