diff --git a/src/client/cl_main.c b/src/client/cl_main.c
index 31e6f8cd..6747bfa7 100644
--- a/src/client/cl_main.c
+++ b/src/client/cl_main.c
@@ -1312,7 +1312,7 @@ void CL_RequestNextDownload (void)
 
 		CM_LoadMap (cl.configstrings[CS_MODELS+1], true, &map_checksum);
 
-		if (map_checksum != strtoul(cl.configstrings[CS_MAPCHECKSUM], NULL, 10)) {
+		if (map_checksum != atoi(cl.configstrings[CS_MAPCHECKSUM])) {
 			Com_Error (ERR_DROP, "Local map version differs from server: %i != '%s'\n",
 				map_checksum, cl.configstrings[CS_MAPCHECKSUM]);
 			return;