diff --git a/surface/include/pcl/surface/impl/mls.hpp b/surface/include/pcl/surface/impl/mls.hpp
index c6706aaf2fd..017b54c739f 100644
--- a/surface/include/pcl/surface/impl/mls.hpp
+++ b/surface/include/pcl/surface/impl/mls.hpp
@@ -534,7 +534,7 @@ pcl::MLSResult::getPolynomialPartialDerivative (const double u, const double v)
 }
 
 Eigen::Vector2f
-pcl::MLSResult::calculatePrincipleCurvatures (const double u, const double v) const
+pcl::MLSResult::calculatePrincipalCurvatures (const double u, const double v) const
 {
   Eigen::Vector2f k (1e-5, 1e-5);
 
@@ -559,7 +559,7 @@ pcl::MLSResult::calculatePrincipleCurvatures (const double u, const double v) co
   }
   else
   {
-    PCL_ERROR ("No Polynomial fit data, unable to calculate the principle curvatures!\n");
+    PCL_ERROR ("No Polynomial fit data, unable to calculate the principal curvatures!\n");
   }
 
   return (k);
diff --git a/surface/include/pcl/surface/mls.h b/surface/include/pcl/surface/mls.h
index ef480bb7bb6..4e7f3944b9f 100644
--- a/surface/include/pcl/surface/mls.h
+++ b/surface/include/pcl/surface/mls.h
@@ -135,14 +135,24 @@ namespace pcl
     inline PolynomialPartialDerivative
     getPolynomialPartialDerivative (const double u, const double v) const;
 
-    /** \brief Calculate the principle curvatures using the polynomial surface.
+    /** \brief Calculate the principal curvatures using the polynomial surface.
       * \param[in] u The u-coordinate of the point in local MLS frame.
       * \param[in] v The v-coordinate of the point in local MLS frame.
-      * \return The principle curvature [k1, k2] at the provided uv coordinates.
-      * \note If an error occurs the MLS_MINIMUM_PRINCIPLE_CURVATURE is returned.
+      * \return The principal curvature [k1, k2] at the provided uv coordinates.
+      * \note If an error occurs then 1e-5 is returned.
       */
+    Eigen::Vector2f
+    calculatePrincipalCurvatures (const double u, const double v) const;
+
+    /** \brief Calculate the principal curvatures using the polynomial surface.
+      * \param[in] u The u-coordinate of the point in local MLS frame.
+      * \param[in] v The v-coordinate of the point in local MLS frame.
+      * \return The principal curvature [k1, k2] at the provided ub coordinates.
+      * \note If an error occurs then 1e-5 is returned.
+      */
+    PCL_DEPRECATED(1, 15, "use calculatePrincipalCurvatures() instead")
     inline Eigen::Vector2f
-    calculatePrincipleCurvatures (const double u, const double v) const;
+    calculatePrincipleCurvatures (const double u, const double v) const { return calculatePrincipalCurvatures(u, v); };
 
     /** \brief Project a point orthogonal to the polynomial surface.
       * \param[in] u The u-coordinate of the point in local MLS frame.