diff --git a/src/fios.h b/src/fios.h
--- a/src/fios.h
+++ b/src/fios.h
@@ -14,12 +14,16 @@
 
 #include "strings_type.h"
 #include "core/smallvec_type.hpp"
+#include "core/smallmap_type.hpp"
 #include "core/enum_type.hpp"
 #include "gfx_type.h"
 #include "date_type.h"
 #include "settings_type.h"
+#include "company_base.h"
 
 
+typedef SmallMap<uint, CompanyProperties *> CompanyPropertiesMap;
+
 /**
  * Container for loading in mode SL_LOAD_CHECK.
  */
@@ -33,6 +37,8 @@ struct LoadCheckData {
 
 	GameSettings settings;
 
+	CompanyPropertiesMap companies;               ///< Company information.
+
 	LoadCheckData() : error_data(NULL)
 	{
 		this->Clear();