diff --git a/antipolls/antipolls.py b/antipolls/antipolls.py
index 53974be..5c4877d 100644
--- a/antipolls/antipolls.py
+++ b/antipolls/antipolls.py
@@ -96,9 +96,9 @@ class AntiPolls(commands.Cog):
             failed: list[discord.Role] = []
             for role in roles:
                 if role.id in role_whitelist:
-                    failed.extend(role)
+                    failed.append(role)
                     continue
-                role_whitelist.extend(role.id)
+                role_whitelist.append(role.id)
         await ctx.tick()
         if failed:
             await ctx.send(f"The following roles were already in the whitelist: {humanize_list(role.mention for role in failed)}", delete_after=10, allowed_mentions=discord.AllowedMentions.none)
@@ -111,7 +111,7 @@ class AntiPolls(commands.Cog):
             failed: list[discord.Role] = []
             for role in roles:
                 if role.id not in role_whitelist:
-                    failed.extend(role)
+                    failed.append(role)
                     continue
                 role_whitelist.remove(role.id)
         await ctx.tick()
@@ -139,9 +139,9 @@ class AntiPolls(commands.Cog):
             failed: list[discord.TextChannel] = []
             for channel in channels:
                 if channel.id in channel_whitelist:
-                    failed.extend(channel)
+                    failed.append(channel)
                     continue
-                channel_whitelist.extend(channel.id)
+                channel_whitelist.append(channel.id)
         await ctx.tick()
         if failed:
             await ctx.send(f"The following channels were already in the whitelist: {humanize_list(channel.mention for channel in failed)}", delete_after=10, allowed_mentions=discord.AllowedMentions.none)
@@ -154,7 +154,7 @@ class AntiPolls(commands.Cog):
             failed: list[discord.TextChannel] = []
             for channel in channels:
                 if channel.id not in channel_whitelist:
-                    failed.extend(channel)
+                    failed.append(channel)
                     continue
                 channel_whitelist.remove(channel.id)
         await ctx.tick()