diff -r cd72eae05bdf -r 3c00344f49c9 lemon/arg_parser.h
--- a/lemon/arg_parser.h	Mon Jul 16 16:21:40 2018 +0200
+++ b/lemon/arg_parser.h	Wed Oct 17 19:14:07 2018 +0200
@@ -26,6 +26,7 @@
 #include <iostream>
 #include <sstream>
 #include <algorithm>
+#include <lemon/core.h>
 #include <lemon/assert.h>
 
 ///\ingroup misc