diff --git a/code/game/objects/items/grenades/grenade.dm b/code/game/objects/items/grenades/grenade.dm
index a70e25a623df..6cb7fb9e65c1 100644
--- a/code/game/objects/items/grenades/grenade.dm
+++ b/code/game/objects/items/grenades/grenade.dm
@@ -150,7 +150,7 @@
 
 /obj/item/grenade/hit_reaction(mob/living/carbon/human/owner, atom/movable/hitby, attack_text = "the attack", final_block_chance = 0, damage = 0, attack_type = MELEE_ATTACK)
 	var/obj/projectile/P = hitby
-	if(damage && attack_type == PROJECTILE_ATTACK && P.damage_type != STAMINA && prob(1) && prob(50))
+	if(damage && attack_type == PROJECTILE_ATTACK && P.damage_type != STAMINA && prob(0.5))
 		owner.visible_message("<span class='danger'>[attack_text] hits [owner]'s [src], setting it off! What a shot!</span>")
 		var/turf/T = get_turf(src)
 		log_game("A projectile ([hitby]) detonated a grenade held by [key_name(owner)] at [COORD(T)]")