diff --git a/gamedir/Data-UB/AddOns/Data-UB-1.13/UB_Options.INI b/gamedir/Data-UB/AddOns/Data-UB-1.13/UB_Options.INI
index 742dc5068..f03b51563 100644
--- a/gamedir/Data-UB/AddOns/Data-UB-1.13/UB_Options.INI
+++ b/gamedir/Data-UB/AddOns/Data-UB-1.13/UB_Options.INI
@@ -142,6 +142,18 @@ SECTOR_DOOR_IN_TUNNEL_GRIDNO = 11419
 
 HANDLE_ADDING_ENEMIES_TO_TUNNEL_MAPS = TRUE
 
+;------------------------------------------------------------------------------------------------------------------------------
+; Determines what sectors the enemies get added to, if HANDLE_ADDING_ENEMIES_TO_TUNNEL_MAPS = TRUE
+; By default, tunnel1 = J14-1 and tunnel2 = K14-1
+;------------------------------------------------------------------------------------------------------------------------------
+TUNNEL1_SECTOR_X = 14
+TUNNEL1_SECTOR_Y = 10
+TUNNEL1_SECTOR_Z = 1
+
+TUNNEL2_SECTOR_X = 14
+TUNNEL2_SECTOR_Y = 11
+TUNNEL2_SECTOR_Z = 1
+
 ;------------------------------------------------------------------------------------------------------------------------------
 ; Enable the option to do a auto resolve battle?
 ;------------------------------------------------------------------------------------------------------------------------------
diff --git a/gamedir/Data-UB/AddOns/Data-UB-Vanilla/UB_Options.INI b/gamedir/Data-UB/AddOns/Data-UB-Vanilla/UB_Options.INI
index fc2a57851..402932f00 100644
--- a/gamedir/Data-UB/AddOns/Data-UB-Vanilla/UB_Options.INI
+++ b/gamedir/Data-UB/AddOns/Data-UB-Vanilla/UB_Options.INI
@@ -142,6 +142,18 @@ SECTOR_DOOR_IN_TUNNEL_GRIDNO = 11419
 
 HANDLE_ADDING_ENEMIES_TO_TUNNEL_MAPS = TRUE
 
+;------------------------------------------------------------------------------------------------------------------------------
+; Determines what sectors the enemies get added to, if HANDLE_ADDING_ENEMIES_TO_TUNNEL_MAPS = TRUE
+; By default, tunnel1 = J14-1 and tunnel2 = K14-1
+;------------------------------------------------------------------------------------------------------------------------------
+TUNNEL1_SECTOR_X = 14
+TUNNEL1_SECTOR_Y = 10
+TUNNEL1_SECTOR_Z = 1
+
+TUNNEL2_SECTOR_X = 14
+TUNNEL2_SECTOR_Y = 11
+TUNNEL2_SECTOR_Z = 1
+
 ;------------------------------------------------------------------------------------------------------------------------------
 ; Enable the option to do a auto resolve battle?
 ;------------------------------------------------------------------------------------------------------------------------------