1 files changed, 2 insertions, 0 deletions
diff --git a/src/openttd.cpp b/src/openttd.cpp
index 70bc76a45..cf4e23a37 100644
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -84,6 +84,8 @@
 
 #include "table/strings.h"
 
+StringID _switch_mode_errorstr;
+
 void CallLandscapeTick();
 void IncreaseDate();
 void DoPaletteAnimations();