diff -r cf5c7fa71134 -r d18261ddac4a share/hedgewars/Data/Scripts/Multiplayer/TechRacer.lua
--- a/share/hedgewars/Data/Scripts/Multiplayer/TechRacer.lua	Wed Jun 28 07:28:52 2023 +0200
+++ b/share/hedgewars/Data/Scripts/Multiplayer/TechRacer.lua	Wed Jun 28 12:01:43 2023 +0200
@@ -682,9 +682,10 @@
 
 	roundLimit = tonumber(params["rounds"])
 
-	if (roundLimit == 0) or (roundLimit == nil) then
+	if roundLimit == nil then
 		roundLimit = 3
 	end
+	roundLimit = math.max(1, math.floor(roundLimit))
 
 	if mapID == nil then
 		mapID = 2 + GetRandom(7)