diff --git a/librarian_commands.py b/librarian_commands.py
index 1210331..e3c67e8 100644
--- a/librarian_commands.py
+++ b/librarian_commands.py
@@ -187,7 +187,7 @@ class DataModule(commands.Cog):
         description="Przygotowuje drinka o nazwie głębokie gardło",
         guild=discord.Object(id=664789470779932693),
     )
-    async def wyszukaj_linki_do_dokumentow_deep(ctx):
+    async def wyszukaj_linki_do_dokumentow_deep(self, ctx):
         """
         The function `wyszukaj_linki_do_dokumentow_deep` performs a deep search for links to documents in
         a crossref database and provides links to scihub.
diff --git a/other_commands.py b/other_commands.py
index 3dbab50..22e4691 100644
--- a/other_commands.py
+++ b/other_commands.py
@@ -20,7 +20,7 @@ class OtherModule(commands.Cog):
     @commands.hybrid_command(
         name="przytul", description="Przytul kogoś - daj mention po komendzie :)"
     )
-    async def przytul(ctx, arg: Optional[discord.Member] = None):
+    async def przytul(self, ctx, arg: Optional[discord.Member] = None):
         """
         Generate a text about hugging mentioned user.
 
@@ -105,7 +105,7 @@ class OtherModule(commands.Cog):
         name="chata_hammera",
         description="Czas od ostatniego incydentu w AbsinthHammerTimeSpaceContinuum",
     )
-    async def chata_hammera(ctx):
+    async def chata_hammera(self, ctx):
         """
         Send measured time from last incident in Hammer Fortress to the chat.
 
@@ -127,7 +127,7 @@ class OtherModule(commands.Cog):
         name="historia_incydentow_u_hammera",
         description="Wyswietla liste incydentów które miały miejsce w AbsinthHammerTimeSpaceContinuum.",
     )
-    async def historia_incydentow_u_hammera(ctx):
+    async def historia_incydentow_u_hammera(self, ctx):
         """
         Send a list of incidents in Hammer Fortress to the chat.