diff --git a/moderation/moderation.py b/moderation/moderation.py
index 1f6c0a5..f6b3919 100644
--- a/moderation/moderation.py
+++ b/moderation/moderation.py
@@ -1473,38 +1473,33 @@ class Moderation(commands.Cog):
 
     @moderationset_blacklist.command(name='add')
     @checks.admin()
-    async def moderationset_blacklist_add(self, ctx: commands.Context, role: discord.Role, duration: str = None):
-        """Add a role to the blacklist.
-
-        Parameters
-        -----------
-        role: discord.Role
-            What role are you adding a blacklist type for?
-        duration: str
-            How long should the target be blacklisted for?"""
+    async def moderationset_blacklist_add(self, ctx: commands.Context, role: discord.Role, duration: str):
+        """Add a role to the blacklist."""
         blacklist_roles: list = await self.config.guild(ctx.guild).blacklist_roles()
         for blacklist_role in blacklist_roles:
             if role.id == blacklist_role['role']:
                 await ctx.send("Role already has an associated blacklist type!")
                 return
+
+        try:
+            parsed_time = parse(sval=duration, as_timedelta=True, raise_exception=True)
+        except ValueError:
+            await ctx.send("Please provide a valid duration!")
+            return
+
         blacklist_roles.append(
             {
             'role': role.id,
-            'duration': duration
+            'duration': parsed_time
             }
         )
         await self.config.guild(ctx.guild).blacklist_roles.set(blacklist_roles)
-        await ctx.send(f"Role {role.mention} added to blacklist.", allowed_mentions=discord.AllowedMentions.none())
+        await ctx.send(f"Role {role.mention} added as a blacklist type.", allowed_mentions=discord.AllowedMentions.none())
 
     @moderationset_blacklist.command(name='remove')
     @checks.admin()
     async def moderationset_blacklist_remove(self, ctx: commands.Context, role: discord.Role):
-        """Remove a role's blacklist type.
-
-        Parameters
-        -----------
-        role: discord.Role
-            What role are you removing a blacklist type for?"""
+        """Remove a role's blacklist type."""
         blacklist_roles: list = await self.config.guild(ctx.guild).blacklist_roles()
         for blacklist_role in blacklist_roles:
             if role.id == blacklist_role['role']: