1 files changed, 2 insertions, 0 deletions
diff --git a/utils.h b/utils.h
index 47f36d89..c0e880a2 100644
--- a/utils.h
+++ b/utils.h
@@ -242,6 +242,8 @@ inline bool operator!=(const string& __lhs, const char* __rhs)
 
 #endif // VERIFY_ON
 
+extern ledger::string empty_string;
+
 #define IF_VERIFY() if (DO_VERIFY())
 
 /**********************************************************************