diff --git a/src/p_acs.cpp b/src/p_acs.cpp
index 7fe6bbb1a..0352be07e 100644
--- a/src/p_acs.cpp
+++ b/src/p_acs.cpp
@@ -4272,7 +4272,7 @@ int DLevelScript::RunScript ()
 					module = activeBehavior;
 					funcnum = NEXTBYTE;
 				}
-				func = activeBehavior->GetFunction (funcnum, module);
+				func = module->GetFunction (funcnum, module);
 
 				if (func == NULL)
 				{