diff --git a/gamedir/Data-1.13/Ja2_Options.INI b/gamedir/Data-1.13/Ja2_Options.INI
index 8bca794ed..74ece1235 100644
--- a/gamedir/Data-1.13/Ja2_Options.INI
+++ b/gamedir/Data-1.13/Ja2_Options.INI
@@ -3521,6 +3521,9 @@ CAMPAIGN_HISTORY = TRUE
 ; Only read the last ... battle reports, forget older ones. With -1 (default), read all of them. Reports lost this way cannot be recreated!
 CAMPAIGN_HISTORY_MAX_REPORTS = -1
 
+; Show details in background tooltip
+BACKGROUND_TOOLTIP_DETAILS = TRUE
+
 ;******************************************************************************************************************************
 ;******************************************************************************************************************************