diff --git a/inc/TRestTrackLinearizationProcess.h b/inc/TRestTrackLinearizationProcess.h
index e6e6fe8..e097ce2 100644
--- a/inc/TRestTrackLinearizationProcess.h
+++ b/inc/TRestTrackLinearizationProcess.h
@@ -23,9 +23,9 @@
 #ifndef RestCore_TRestTrackLinearizationProcess
 #define RestCore_TRestTrackLinearizationProcess
 
-#include <TRestEventProcess.h>
+#include <TRestTrackEvent.h>
 
-#include "TRestTrackEvent.h"
+#include "TRestEventProcess.h"
 
 //! A process to perform track linearization
 class TRestTrackLinearizationProcess : public TRestEventProcess {
@@ -38,6 +38,7 @@ class TRestTrackLinearizationProcess : public TRestEventProcess {
    protected:
     // A parameter which defines the maximum number of nodes for the track linearization
     Int_t fMaxNodes = 6;
+    Bool_t fFixBoundaries = false;
 
    public:
     RESTValue GetInputEvent() const override { return fTrackEvent; }
@@ -50,6 +51,7 @@ class TRestTrackLinearizationProcess : public TRestEventProcess {
     void PrintMetadata() override {
         BeginPrintProcess();
         RESTMetadata << "Max nodes: " << fMaxNodes << RESTendl;
+        RESTMetadata << "Fix boundaries: " << (fFixBoundaries ? "true" : "false") << RESTendl;
         EndPrintProcess();
     }
 
@@ -65,6 +67,6 @@ class TRestTrackLinearizationProcess : public TRestEventProcess {
 
     // ROOT class definition helper. Increase the number in it every time
     // you add/rename/remove the process parameters
-    ClassDefOverride(TRestTrackLinearizationProcess, 1);
+    ClassDefOverride(TRestTrackLinearizationProcess, 2);
 };
 #endif
diff --git a/src/TRestTrackLinearizationProcess.cxx b/src/TRestTrackLinearizationProcess.cxx
index 5f0d923..c68d7d4 100644
--- a/src/TRestTrackLinearizationProcess.cxx
+++ b/src/TRestTrackLinearizationProcess.cxx
@@ -36,6 +36,11 @@
 ///
 /// ### Parameters
 /// * fMaxNodes : Maximum number of nodes (hits) to reduce the hits to a line
+/// * fFixBoundaries : Fix the boundaries of the track, i.e. the first and last nodes. It
+/// is recommended to add 2 more nodes to fMaxNodes when setting this parameter to true. This
+/// avoids the first and last nodes being pulled into the center of the track by the
+/// kMeansClustering algorithm. This is useful when you need an accurate measurement of the
+/// track length, but it is less precise (worse length resolution). Default is false.
 ///
 /// ### Examples
 /// \code
@@ -63,7 +68,6 @@
 #include "TRestTrackLinearizationProcess.h"
 
 #include "TRestTrackReductionProcess.h"
-
 using namespace std;
 
 ClassImp(TRestTrackLinearizationProcess);
@@ -167,7 +171,7 @@ void TRestTrackLinearizationProcess::GetHitsProjection(TRestVolumeHits* hits, co
         return;
     }
 
-    TRestVolumeHits::kMeansClustering(hits, vHits, 1);
+    TRestVolumeHits::kMeansClustering(hits, vHits, 1, fFixBoundaries);
 
     if (GetVerboseLevel() >= TRestStringOutput::REST_Verbose_Level::REST_Debug)
         for (unsigned int i = 0; i < vHits.GetNumberOfHits(); i++)