diff --git a/src/playsim/p_mobj.cpp b/src/playsim/p_mobj.cpp
index b140823b2d..6eb98c0ba5 100644
--- a/src/playsim/p_mobj.cpp
+++ b/src/playsim/p_mobj.cpp
@@ -5370,6 +5370,10 @@ void AActor::HandleSpawnFlags ()
 	{
 		flags4 |= MF4_STANDSTILL;
 	}
+	if (SpawnFlags & MTF_NOINFIGHTING)
+	{
+		flags5 |= MF5_NOINFIGHTING;
+	}
 	if (SpawnFlags & MTF_FRIENDLY)
 	{
 		flags |= MF_FRIENDLY;