diff --git a/src/p_enemy.c b/src/p_enemy.c
index 9235a1d0f..2db32adc3 100644
--- a/src/p_enemy.c
+++ b/src/p_enemy.c
@@ -10884,9 +10884,14 @@ void P_InternalFlickyFly(mobj_t *actor, fixed_t flyspeed, fixed_t targetdist, fi
 	if (actor->target && abs(chasez - actor->z) > targetdist)
 		targetdist = P_AproxDistance(actor->target->x - actor->x, actor->target->y - actor->y);
 
-	vertangle = (R_PointToAngle2(0, actor->z, targetdist, chasez) >> ANGLETOFINESHIFT) & FINEMASK;
-	P_InstaThrust(actor, actor->angle, FixedMul(FINECOSINE(vertangle), flyspeed));
-	actor->momz = FixedMul(FINESINE(vertangle), flyspeed);
+	if (actor->spawnpoint && (actor->spawnpoint->options & MTF_AMBUSH))
+		actor->momz = 0;
+	else
+	{
+		vertangle = (R_PointToAngle2(0, actor->z, targetdist, chasez) >> ANGLETOFINESHIFT) & FINEMASK;
+		P_InstaThrust(actor, actor->angle, FixedMul(FINECOSINE(vertangle), flyspeed));
+		actor->momz = FixedMul(FINESINE(vertangle), flyspeed);
+	}
 }
 
 // Function: A_FlickyFly
@@ -11636,4 +11641,4 @@ void A_CheckFlags2(mobj_t *actor)
 
 	if (actor->flags2 & locvar1)
 		P_SetMobjState(actor, (statenum_t)locvar2);
-}
\ No newline at end of file
+}