diff --git a/limap/fitting/line3d_estimator.h b/limap/fitting/line3d_estimator.h
index 70b708f8..43d2a477 100644
--- a/limap/fitting/line3d_estimator.h
+++ b/limap/fitting/line3d_estimator.h
@@ -13,7 +13,7 @@ namespace fitting {
 
 // Implements a simple solver that estimates a 3D line from two data points.
 // Reference link:
-// https://github.com/B1ueber2y/RansacLib/blob/master/examples/line_estimator.h
+// https://github.com/tsattler/RansacLib/blob/master/examples/line_estimator.h
 class Line3dEstimator {
 public:
   Line3dEstimator(const Eigen::Matrix3Xd &data);
diff --git a/limap/runners/functions.py b/limap/runners/functions.py
index d5795ab0..14852198 100644
--- a/limap/runners/functions.py
+++ b/limap/runners/functions.py
@@ -227,7 +227,6 @@ def compute_2d_segs(cfg, imagecols, compute_descinfo=True):
                 cfg["line2d"]["detector"]["method"], imagecols.NumImages()
             )
         )
-    import limap.line2d
 
     if not imagecols.IsUndistorted():
         logging.warning("The input images are distorted!", stacklevel=2)
diff --git a/limap/util/CMakeLists.txt b/limap/util/CMakeLists.txt
index 66e52096..3613e1c4 100644
--- a/limap/util/CMakeLists.txt
+++ b/limap/util/CMakeLists.txt
@@ -3,8 +3,6 @@ set(FOLDER_NAME "util")
 LIMAP_ADD_SOURCES(
     types.h
     simple_logger.h simple_logger.cc
-
-    nanoflann.hpp
     kd_tree.h kd_tree.cpp
 )
 
diff --git a/limap/util/kd_tree.cpp b/limap/util/kd_tree.cpp
index 70fd9897..2db139fb 100644
--- a/limap/util/kd_tree.cpp
+++ b/limap/util/kd_tree.cpp
@@ -5,7 +5,6 @@
 #include <iostream>
 
 #include "limap/util/kd_tree.h"
-#include "limap/util/nanoflann.hpp"
 
 namespace limap {
 
diff --git a/limap/util/kd_tree.h b/limap/util/kd_tree.h
index 53d918e2..47b7d245 100644
--- a/limap/util/kd_tree.h
+++ b/limap/util/kd_tree.h
@@ -5,8 +5,8 @@
 #include <memory>
 #include <string.h>
 
-#include "limap/util/nanoflann.hpp"
 #include <Eigen/Core>
+#include <third-party/nanoflann.hpp>
 
 using namespace nanoflann;
 
diff --git a/limap/util/nanoflann.hpp b/third-party/nanoflann.hpp
similarity index 100%
rename from limap/util/nanoflann.hpp
rename to third-party/nanoflann.hpp