diff --git a/src/currency.cpp b/src/currency.cpp
--- a/src/currency.cpp
+++ b/src/currency.cpp
@@ -20,6 +20,8 @@
 
 #include "table/strings.h"
 
+#include "safeguards.h"
+
 	/*   exchange rate    prefix                         symbol_pos
 	 *   |  separator        |           postfix             |
 	 *   |   |   Euro year   |              |                | name