diff --git a/gamedir/Data-1.13/Ja2_Options.INI b/gamedir/Data-1.13/Ja2_Options.INI
index 3693eea20..b3e7d4855 100644
--- a/gamedir/Data-1.13/Ja2_Options.INI
+++ b/gamedir/Data-1.13/Ja2_Options.INI
@@ -1495,7 +1495,12 @@ BRIGHTNESS_MOD_15 = 9
 
 ALLOW_TUNNEL_VISION = TRUE
 
-
+;------------------------------------------------------------------------------------------------------------------------------
+; If set to 0, nothing happens.
+; If set to 1, vision is lowered while running.
+; If set to 2, this only applies to the player team.
+;------------------------------------------------------------------------------------------------------------------------------
+LOWER_VISION_WHILE_RUNNING = 0
 
 
 ;******************************************************************************************************************************
diff --git a/gamedir/Data/Ja2_Options.INI b/gamedir/Data/Ja2_Options.INI
index f846e4391..8ca54b181 100644
--- a/gamedir/Data/Ja2_Options.INI
+++ b/gamedir/Data/Ja2_Options.INI
@@ -1507,7 +1507,12 @@ BRIGHTNESS_MOD_15 = 9
 
 ALLOW_TUNNEL_VISION = FALSE
 
-
+;------------------------------------------------------------------------------------------------------------------------------
+; If set to 0, nothing happens.
+; If set to 1, vision is lowered while running.
+; If set to 2, this only applies to the player team.
+;------------------------------------------------------------------------------------------------------------------------------
+LOWER_VISION_WHILE_RUNNING = 0
 
 
 ;******************************************************************************************************************************