diff --git a/include/spline/BezierCurve.h b/include/spline/bezier_curve.h
similarity index 94%
rename from include/spline/BezierCurve.h
rename to include/spline/bezier_curve.h
index dbada18c15f1bc688bfc75c12c677d740b523996..7170c006b3648aac25f749adbcb6d06b8c5b54ae 100644
--- a/include/spline/BezierCurve.h
+++ b/include/spline/bezier_curve.h
@@ -10,7 +10,7 @@
 #ifndef _CLASS_BEZIERCURVE
 #define _CLASS_BEZIERCURVE
 
-#include "Curve_ABC.h"
+#include "curve_abc.h"
 
 #include "MathDefs.h"
 
diff --git a/include/spline/CubicFunction.h b/include/spline/cubic_function.h
similarity index 94%
rename from include/spline/CubicFunction.h
rename to include/spline/cubic_function.h
index fa30e22fa3395449673bd96f9b601e062301a2bd..13b6f4f71e17ecd89ca1ca06ee24713498102855 100644
--- a/include/spline/CubicFunction.h
+++ b/include/spline/cubic_function.h
@@ -1,5 +1,5 @@
 /**
-* \file ExactCubic.h
+* \file cubic_function.h
 * \brief Definition of a cubic spline.
 * \author Steve T.
 * \version 0.1
@@ -16,7 +16,7 @@
 
 #include "MathDefs.h"
 
-#include "Curve_ABC.h"
+#include "curve_abc.h"
 
 #include <stdexcept>
 
diff --git a/include/spline/Curve_ABC.h b/include/spline/curve_abc.h
similarity index 100%
rename from include/spline/Curve_ABC.h
rename to include/spline/curve_abc.h
diff --git a/include/spline/ExactCubic.h b/include/spline/exact_cubic.h
similarity index 95%
rename from include/spline/ExactCubic.h
rename to include/spline/exact_cubic.h
index efdc14f21b8e550900f8bd674c325942f4c28a0f..13ae33a4d7bea391e120eb68704e96dbba2ca0c9 100644
--- a/include/spline/ExactCubic.h
+++ b/include/spline/exact_cubic.h
@@ -20,8 +20,8 @@
 #ifndef _CLASS_EXACTCUBIC
 #define _CLASS_EXACTCUBIC
 
-#include "Curve_ABC.h"
-#include "CubicFunction.h"
+#include "curve_abc.h"
+#include "cubic_function.h"
 
 #include "MathDefs.h"
 
diff --git a/src/tests/spline_test/Main.cpp b/src/tests/spline_test/Main.cpp
index 874568ec8eeb17ef6722883c14590c787ddf3bb7..601646f316d27225018a23728a10dd33600a1a49 100644
--- a/src/tests/spline_test/Main.cpp
+++ b/src/tests/spline_test/Main.cpp
@@ -1,7 +1,7 @@
 
-#include "spline/CubicFunction.h"
-#include "spline/ExactCubic.h"
-#include "spline/BezierCurve.h"
+#include "spline/cubic_function.h"
+#include "spline/exact_cubic.h"
+#include "spline/bezier_curve.h"
 
 #include <string>
 #include <iostream>