diff --git a/src/3rdparty/squirrel/squirrel/sqbaselib.cpp b/src/3rdparty/squirrel/squirrel/sqbaselib.cpp
index c542ee5a47..8dff3daf0e 100644
--- a/src/3rdparty/squirrel/squirrel/sqbaselib.cpp
+++ b/src/3rdparty/squirrel/squirrel/sqbaselib.cpp
@@ -816,6 +816,7 @@ static SQInteger thread_call(HSQUIRRELVM v)
 	SQObjectPtr o = stack_get(v,1);
 	if(type(o) == OT_THREAD) {
 		SQInteger nparams = sq_gettop(v);
+		sq_reservestack(_thread(o), nparams + 3);
 		_thread(o)->Push(_thread(o)->_roottable);
 		for(SQInteger i = 2; i<(nparams+1); i++)
 			sq_move(_thread(o),v,i);