diff --git a/owlps-positioner/point3d.hh b/owlps-positioner/point3d.hh
index 3e37e76..8f041a4 100644
--- a/owlps-positioner/point3d.hh
+++ b/owlps-positioner/point3d.hh
@@ -19,9 +19,10 @@ class Timestamp ;
 
 #include "posutil.hh"
 
-#include <string>
-#include <ostream>
 #include <cmath>
+#include <ostream>
+#include <string>
+#include <vector>
 
 /// Represents a point of the 3-D space
 class Point3D