diff --git a/DDSegmentation/include/DDSegmentation/CartesianGridYZ.h b/DDSegmentation/include/DDSegmentation/CartesianGridYZ.h
index aeba7572e1d407e5340d342f659d238b1231d77b..37479f1574df05b05212e2d88b1e4db39f2cd6f4 100644
--- a/DDSegmentation/include/DDSegmentation/CartesianGridYZ.h
+++ b/DDSegmentation/include/DDSegmentation/CartesianGridYZ.h
@@ -1,5 +1,5 @@
-#ifndef DDSegmentation_CARTESIANGRIDXY_H_
-#define DDSegmentation_CARTESIANGRIDXY_H_
+#ifndef DDSegmentation_CARTESIANGRIDYZ_H_
+#define DDSegmentation_CARTESIANGRIDYZ_H_
 
 #include "DDSegmentation/CartesianGrid.h"