diff --git a/src/intermission/intermission.cpp b/src/intermission/intermission.cpp
index 0b8afa1e4..f0d308579 100644
--- a/src/intermission/intermission.cpp
+++ b/src/intermission/intermission.cpp
@@ -838,6 +838,7 @@ void F_StartIntermission(FIntermissionDescriptor *desc, bool deleteme, BYTE stat
 	viewactive = false;
 	automapactive = false;
 	DIntermissionController::CurrentIntermission = new DIntermissionController(desc, deleteme, state);
+	GC::WriteBarrier(DIntermissionController::CurrentIntermission);
 }