1 files changed, 3 insertions, 1 deletions
diff --git a/src/units.h b/src/units.h
index bc9905779..e8e181faf 100644
--- a/src/units.h
+++ b/src/units.h
@@ -25,7 +25,9 @@
 
 #include <string>
 
-class Units
+#include "localconsts.h"
+
+class Units final
 {
     public:
         /**