diff --git a/code/modules/projectiles/projectile/special.dm b/code/modules/projectiles/projectile/special.dm
index 705a817236..78e3f4f46b 100644
--- a/code/modules/projectiles/projectile/special.dm
+++ b/code/modules/projectiles/projectile/special.dm
@@ -17,7 +17,7 @@
 	var/sev3_range = 1
 	var/sev4_range = 1
 
-/obj/item/projectile/ion/on_hit(var/atom/target, var/blocked = 0)
+/obj/item/projectile/ion/on_impact(var/atom/target)
 		empulse(target, sev1_range, sev2_range, sev3_range, sev4_range)
 		return 1