diff --git a/src/objects/versus/arena.c b/src/objects/versus/arena.c
index 2e26fd9ef..13f6c4373 100644
--- a/src/objects/versus/arena.c
+++ b/src/objects/versus/arena.c
@@ -91,7 +91,7 @@ fixed_t *VS_PredictAroundArena(mobj_t *arena, mobj_t *movingobject, fixed_t magn
 		// Subtract the radius so it's usable as a delta!
 		radiusdelta -= radius;
 	
-		if (radiusdelta)
+		if (radiusdelta && radiusdeltafactor != FRACUNIT)
 			radiusdelta = FixedDiv(radiusdelta, radiusdeltafactor);
 	}