diff --git a/src/gamedata/info.cpp b/src/gamedata/info.cpp
index 2e0109db49..5942ae2d36 100644
--- a/src/gamedata/info.cpp
+++ b/src/gamedata/info.cpp
@@ -487,6 +487,8 @@ void PClassActor::InitializeDefaults()
 			{
 				memset(Defaults + ParentClass->Size, 0, Size - ParentClass->Size);
 			}
+
+			optr->ObjectFlags = ((DObject*)ParentClass->Defaults)->ObjectFlags & OF_Transient;
 		}
 		else
 		{