diff --git a/gamedir/Data-1.13/Item_Settings.ini b/gamedir/Data-1.13/Item_Settings.ini
index 6f57f6c72..9e058ca72 100644
--- a/gamedir/Data-1.13/Item_Settings.ini
+++ b/gamedir/Data-1.13/Item_Settings.ini
@@ -345,6 +345,14 @@ DAMAGE_HEALTH_MOVE_EXPLOSIVE_MODIFIER	= 0.1
 DAMAGE_BREATH_MOVE_EXPLOSIVE_MODIFIER	= 0.1
 ;******************************************************************************************************************************
 
+;******************************************************************************************************************************
+; The following modifiers define a max miss radius for ballistic explosive handling. Explosives will land within this radius
+; around the target tile. The better a merc is with grenades or mortar (check the traits) the higher will be his Chance to Hit
+; and the smaller will be the final radius.
+; Valid values are from 0 to 30.
+MISS_MAX_RADIUS_GRENADE		= 5;
+MISS_MAX_RADIUS_MORTAR		= 10;
+
 ;******************************************************************************************************************************
 
 [Misc Settings]
diff --git a/gamedir/Data/Item_Settings.ini b/gamedir/Data/Item_Settings.ini
index d68ed772d..13a14f619 100644
--- a/gamedir/Data/Item_Settings.ini
+++ b/gamedir/Data/Item_Settings.ini
@@ -345,6 +345,14 @@ DAMAGE_HEALTH_MOVE_EXPLOSIVE_MODIFIER	= 0.1
 DAMAGE_BREATH_MOVE_EXPLOSIVE_MODIFIER	= 0.1
 ;******************************************************************************************************************************
 
+;******************************************************************************************************************************
+; The following modifiers define a max miss radius for ballistic explosive handling. Explosives will land within this radius
+; around the target tile. The better a merc is with grenades or mortar (check the traits) the higher will be his Chance to Hit
+; and the smaller will be the final radius.
+; Valid values are from 0 to 30.
+MISS_MAX_RADIUS_GRENADE		= 5;
+MISS_MAX_RADIUS_MORTAR		= 5;
+
 ;******************************************************************************************************************************
 
 [Misc Settings]