diff --git a/code/game/turfs/simulated/river.dm b/code/game/turfs/simulated/river.dm
index 292aa9fb72c..2febfc20d78 100644
--- a/code/game/turfs/simulated/river.dm
+++ b/code/game/turfs/simulated/river.dm
@@ -68,7 +68,7 @@
 		var/cur_dir = get_dir(cur_turf, target_turf)
 		while(cur_turf != target_turf)
 			if(detouring) //randomly snake around a bit
-				if(prob(20))
+				if(prob(21))
 					detouring = 0
 					cur_dir = get_dir(cur_turf, target_turf)
 			else if(prob(20))