diff --git a/MathLib/MathTools.h b/MathLib/MathTools.h
index 80a8377f56aff37baa39b6078d3c12879d5983d4..ad0d1d3d445a0473d7bbde3208c34aed0b393953 100644
--- a/MathLib/MathTools.h
+++ b/MathLib/MathTools.h
@@ -26,7 +26,7 @@ class Point3d;
  * \param pa first point of line
  * \param pb second point of line
  * \param lambda the projected point described by the line equation above
- * \param d0 distance to the line point a
+ * \param d0 distance of the projected point to line point a
  * \returns the distance between pp and the orthogonal projection of pp
  */
 double calcProjPntToLineAndDists(MathLib::Point3d const& pp,