diff --git a/MaterialLib/Adsorption/ReactionSinusoidal.h b/MaterialLib/Adsorption/ReactionSinusoidal.h
index f0b3b0fda80a6e5a801c4edff3462127bb7007fe..47bfab022dcb62b635aee1835070da7d9a885938 100644
--- a/MaterialLib/Adsorption/ReactionSinusoidal.h
+++ b/MaterialLib/Adsorption/ReactionSinusoidal.h
@@ -13,6 +13,7 @@
 
 #include "Reaction.h"
 #include "BaseLib/ConfigTree.h"
+#include "BaseLib/Error.h"
 #include "BaseLib/StringTools.h"
 
 namespace Adsorption