diff --git a/wadsrc/static/zscript/actors/mbf21.zs b/wadsrc/static/zscript/actors/mbf21.zs
index 598cc21dd..ec5f7e4aa 100644
--- a/wadsrc/static/zscript/actors/mbf21.zs
+++ b/wadsrc/static/zscript/actors/mbf21.zs
@@ -505,7 +505,7 @@ extend class Weapon
 	deprecated("2.3", "for Dehacked use only")
 	void MBF21_SeekTracer(double threshold, double turnmax)
 	{
-		A_SeekerMissile(threshold, turnmax); // args get truncated to ints here, but it's close enough
+		A_SeekerMissile(threshold, turnmax, flags: SMF_PRECISE); // args get truncated to ints here, but it's close enough
 	}
 
 }
\ No newline at end of file