diff --git a/src/p_acs.cpp b/src/p_acs.cpp
index 981870a360..feecbb0aa9 100644
--- a/src/p_acs.cpp
+++ b/src/p_acs.cpp
@@ -5105,7 +5105,7 @@ int DLevelScript::CallFunction(int argCount, int funcIndex, SDWORD *args, const
 
 					while ((source = it.Next()) != NULL)
 					{
-						P_LineAttack(activator, angle, range, pitch, damage, damagetype, pufftype, fhflags);
+						P_LineAttack(source, angle, range, pitch, damage, damagetype, pufftype, fhflags);
 					}
 				}
 			}