diff --git a/include/materials/CrazyKCPlantFits.h b/include/materials/CrazyKCPlantFits.h
index bbe983af..6c5b902a 100644
--- a/include/materials/CrazyKCPlantFits.h
+++ b/include/materials/CrazyKCPlantFits.h
@@ -6,8 +6,8 @@
 //*
 //* Licensed under LGPL 2.1, please see LICENSE for details
 //* https://www.gnu.org/licenses/lgpl-2.1.html
-#ifndef CRAZYKCPLANTFITS_H_
-#define CRAZYKCPLANTFITS_H_
+#ifndef CRAZYKCPLANTFITS_H
+#define CRAZYKCPLANTFITS_H
 
 #include "ADMaterial.h"
 
diff --git a/include/materials/CrazyKCPlantFitsBoundary.h b/include/materials/CrazyKCPlantFitsBoundary.h
index 62912b95..26392a4b 100644
--- a/include/materials/CrazyKCPlantFitsBoundary.h
+++ b/include/materials/CrazyKCPlantFitsBoundary.h
@@ -6,8 +6,8 @@
 //*
 //* Licensed under LGPL 2.1, please see LICENSE for details
 //* https://www.gnu.org/licenses/lgpl-2.1.html
-#ifndef CRAZYKCPLANTFITSBOUNDARY_H_
-#define CRAZYKCPLANTFITSBOUNDARY_H_
+#ifndef CRAZYKCPLANTFITSBOUNDARY_H
+#define CRAZYKCPLANTFITSBOUNDARY_H
 
 #include "ADMaterial.h"