diff --git a/hlna.py b/hlna.py
index 0a4a7d3..6824dfc 100755
--- a/hlna.py
+++ b/hlna.py
@@ -496,7 +496,7 @@ def modextract(id_mod, id_game_workshop, dir_ark_mods):
     os.system(f"mv -f {dir_steam_workshop} {dir_ark_mods}")
 
     modname = subprocess.check_output(
-        ['curl', '-s', 'https://steamcommunity.com/sharedfiles/filedetails/?id={}'.format(id_mod)]).decode('utf-8')
+        ['curl', '-s', f'https://steamcommunity.com/sharedfiles/filedetails/?id={id_mod}']).decode('utf-8')
     modname = re.search(r'<div class="workshopItemTitle">(.+)</div>', modname)
     modname = modname and modname.group(1)
 
@@ -515,7 +515,7 @@ def modextract(id_mod, id_game_workshop, dir_ark_mods):
         modpath = b"../../../" + dir_shooter.encode() + b"/Content/Mods/" + id_mod.encode() + b'\x00'
         modpathlen = len(modpath)
         with open(f"{dir_ark_mods}.mod", "wb") as mod:
-            mod.write(struct.pack('<LLL{}sL{}sL'.format(modnamelen, modpathlen), int(id_mod), 0, modnamelen, modname,
+            mod.write(struct.pack(f'<LLL{modnamelen}sL{modpathlen}sL', int(id_mod), 0, modnamelen, modname,
                                   modpathlen, modpath, nummaps))
             for mapnum in range(nummaps):
                 mapfilelen = struct.unpack_from("<L", data, pos)[0]