diff --git a/src/rodsolver.hh b/src/rodsolver.hh
index ffe9b6b78606129ce8fa26f197909cf95ce4fc62..066a7890d1e2c538295da948d67d76eee4958e75 100644
--- a/src/rodsolver.hh
+++ b/src/rodsolver.hh
@@ -1,5 +1,5 @@
 #ifndef ROD_SOLVER_HH
-#define RODSOLVER
+#define ROD_SOLVER_HH
 
 #include <dune/common/array.hh>
 #include <dune/istl/bcrsmatrix.hh>