diff --git a/src/scripting/thingdef.cpp b/src/scripting/thingdef.cpp
index 355cc87f3..ef26d8a50 100644
--- a/src/scripting/thingdef.cpp
+++ b/src/scripting/thingdef.cpp
@@ -425,6 +425,15 @@ void LoadActors()
 			CheckForUnsafeStates(ti);
 		}
 
+		// ensure that all actor bouncers have PASSMOBJ set.
+		auto defaults = GetDefaultByType(ti);
+		if (defaults->BounceFlags & (BOUNCE_Actors | BOUNCE_AllActors))
+		{
+			// PASSMOBJ is irrelevant for normal missiles, but not for bouncers.
+			defaults->flags2 |= MF2_PASSMOBJ;
+		}
+
+
 	}
 	if (FScriptPosition::ErrorCounter > 0)
 	{
diff --git a/src/scripting/thingdef_properties.cpp b/src/scripting/thingdef_properties.cpp
index 27b7ab2d3..e54a00963 100644
--- a/src/scripting/thingdef_properties.cpp
+++ b/src/scripting/thingdef_properties.cpp
@@ -1216,11 +1216,6 @@ DEFINE_PROPERTY(bouncetype, S, Actor)
 	}
 	defaults->BounceFlags &= ~(BOUNCE_TypeMask | BOUNCE_UseSeeSound);
 	defaults->BounceFlags |= flags[match];
-	if (defaults->BounceFlags & (BOUNCE_Actors | BOUNCE_AllActors))
-	{
-		// PASSMOBJ is irrelevant for normal missiles, but not for bouncers.
-		defaults->flags2 |= MF2_PASSMOBJ;
-	}
 }
 
 //==========================================================================