diff --git a/src/Discord.Net.Commands/Attributes/OverrideTypeReaderAttribute.cs b/src/Discord.Net.Commands/Attributes/OverrideTypeReaderAttribute.cs
index fa661fb5f..ec110ab1a 100644
--- a/src/Discord.Net.Commands/Attributes/OverrideTypeReaderAttribute.cs
+++ b/src/Discord.Net.Commands/Attributes/OverrideTypeReaderAttribute.cs
@@ -23,7 +23,7 @@ namespace Discord.Commands
         public OverrideTypeReaderAttribute(Type overridenTypeReader)
         {
             if (!TypeReaderTypeInfo.IsAssignableFrom(overridenTypeReader.GetTypeInfo()))
-                throw new ArgumentException($"{nameof(overridenTypeReader)} must inherit from {nameof(TypeReader)}");
+                throw new ArgumentException($"{nameof(overridenTypeReader)} must inherit from {nameof(TypeReader)}.");
             
             TypeReader = overridenTypeReader;
         }
diff --git a/src/Discord.Net.Core/Entities/Emotes/Emote.cs b/src/Discord.Net.Core/Entities/Emotes/Emote.cs
index a59f10546..b9f166ab3 100644
--- a/src/Discord.Net.Core/Entities/Emotes/Emote.cs
+++ b/src/Discord.Net.Core/Entities/Emotes/Emote.cs
@@ -69,7 +69,7 @@ namespace Discord
         {
             if (TryParse(text, out Emote result))
                 return result;
-            throw new ArgumentException(message: "Invalid emote format", paramName: nameof(text));
+            throw new ArgumentException(message: "Invalid emote format.", paramName: nameof(text));
         }
 
         /// <summary> Tries to parse an <see cref="Emote"/> from its raw format. </summary>
diff --git a/src/Discord.Net.Core/Entities/Messages/EmbedBuilder.cs b/src/Discord.Net.Core/Entities/Messages/EmbedBuilder.cs
index 18e084aa0..39d24fa03 100644
--- a/src/Discord.Net.Core/Entities/Messages/EmbedBuilder.cs
+++ b/src/Discord.Net.Core/Entities/Messages/EmbedBuilder.cs
@@ -75,7 +75,7 @@ namespace Discord
             get => _url;
             set
             {
-                if (!value.IsNullOrUri()) throw new ArgumentException(message: "Url must be a well-formed URI", paramName: nameof(Url));
+                if (!value.IsNullOrUri()) throw new ArgumentException(message: "Url must be a well-formed URI.", paramName: nameof(Url));
                 _url = value;
             }
         }
@@ -87,7 +87,7 @@ namespace Discord
             get => _thumbnail?.Url;
             set
             {
-                if (!value.IsNullOrUri()) throw new ArgumentException(message: "Url must be a well-formed URI", paramName: nameof(ThumbnailUrl));
+                if (!value.IsNullOrUri()) throw new ArgumentException(message: "Url must be a well-formed URI.", paramName: nameof(ThumbnailUrl));
                 _thumbnail = new EmbedThumbnail(value, null, null, null);
             }
         }
@@ -99,7 +99,7 @@ namespace Discord
             get => _image?.Url;
             set
             {
-                if (!value.IsNullOrUri()) throw new ArgumentException(message: "Url must be a well-formed URI", paramName: nameof(ImageUrl));
+                if (!value.IsNullOrUri()) throw new ArgumentException(message: "Url must be a well-formed URI.", paramName: nameof(ImageUrl));
                 _image = new EmbedImage(value, null, null, null);
             }
         }
@@ -115,7 +115,7 @@ namespace Discord
             get => _fields;
             set
             {
-                if (value == null) throw new ArgumentNullException(paramName: nameof(Fields), message: "Cannot set an embed builder's fields collection to null");
+                if (value == null) throw new ArgumentNullException(paramName: nameof(Fields), message: "Cannot set an embed builder's fields collection to null.");
                 if (value.Count > MaxFieldCount) throw new ArgumentException(message: $"Field count must be less than or equal to {MaxFieldCount}.", paramName: nameof(Fields));
                 _fields = value;
             }
@@ -590,7 +590,7 @@ namespace Discord
             get => _url;
             set
             {
-                if (!value.IsNullOrUri()) throw new ArgumentException(message: "Url must be a well-formed URI", paramName: nameof(Url));
+                if (!value.IsNullOrUri()) throw new ArgumentException(message: "Url must be a well-formed URI.", paramName: nameof(Url));
                 _url = value;
             }
         }
@@ -606,7 +606,7 @@ namespace Discord
             get => _iconUrl;
             set
             {
-                if (!value.IsNullOrUri()) throw new ArgumentException(message: "Url must be a well-formed URI", paramName: nameof(IconUrl));
+                if (!value.IsNullOrUri()) throw new ArgumentException(message: "Url must be a well-formed URI.", paramName: nameof(IconUrl));
                 _iconUrl = value;
             }
         }
@@ -708,7 +708,7 @@ namespace Discord
             get => _iconUrl;
             set
             {
-                if (!value.IsNullOrUri()) throw new ArgumentException(message: "Url must be a well-formed URI", paramName: nameof(IconUrl));
+                if (!value.IsNullOrUri()) throw new ArgumentException(message: "Url must be a well-formed URI.", paramName: nameof(IconUrl));
                 _iconUrl = value;
             }
         }
diff --git a/src/Discord.Net.Core/Entities/Permissions/ChannelPermissions.cs b/src/Discord.Net.Core/Entities/Permissions/ChannelPermissions.cs
index c6454c528..7bef3251a 100644
--- a/src/Discord.Net.Core/Entities/Permissions/ChannelPermissions.cs
+++ b/src/Discord.Net.Core/Entities/Permissions/ChannelPermissions.cs
@@ -31,7 +31,7 @@ namespace Discord
                 case ICategoryChannel _: return Category;
                 case IDMChannel _: return DM;
                 case IGroupChannel _: return Group;
-                default: throw new ArgumentException(message: "Unknown channel type", paramName: nameof(channel));
+                default: throw new ArgumentException(message: "Unknown channel type.", paramName: nameof(channel));
             }
         }
 
diff --git a/src/Discord.Net.Core/Utils/MentionUtils.cs b/src/Discord.Net.Core/Utils/MentionUtils.cs
index 051044abc..6ffb7eee6 100644
--- a/src/Discord.Net.Core/Utils/MentionUtils.cs
+++ b/src/Discord.Net.Core/Utils/MentionUtils.cs
@@ -45,7 +45,7 @@ namespace Discord
         {
             if (TryParseUser(text, out ulong id))
                 return id;
-            throw new ArgumentException(message: "Invalid mention format", paramName: nameof(text));
+            throw new ArgumentException(message: "Invalid mention format.", paramName: nameof(text));
         }
         /// <summary>
         ///     Tries to parse a provided user mention string.
@@ -74,7 +74,7 @@ namespace Discord
         {
             if (TryParseChannel(text, out ulong id))
                 return id;
-            throw new ArgumentException(message: "Invalid mention format", paramName: nameof(text));
+            throw new ArgumentException(message: "Invalid mention format.", paramName: nameof(text));
         }
         /// <summary>
         ///     Tries to parse a provided channel mention string.
@@ -100,7 +100,7 @@ namespace Discord
         {
             if (TryParseRole(text, out ulong id))
                 return id;
-            throw new ArgumentException(message: "Invalid mention format", paramName: nameof(text));
+            throw new ArgumentException(message: "Invalid mention format.", paramName: nameof(text));
         }
         /// <summary>
         ///     Tries to parse a provided role mention string.
diff --git a/src/Discord.Net.Rest/DiscordRestApiClient.cs b/src/Discord.Net.Rest/DiscordRestApiClient.cs
index 83803b282..6e80f2c81 100644
--- a/src/Discord.Net.Rest/DiscordRestApiClient.cs
+++ b/src/Discord.Net.Rest/DiscordRestApiClient.cs
@@ -82,7 +82,7 @@ namespace Discord.API
                 case TokenType.Bearer:
                     return $"Bearer {token}";
                 default:
-                    throw new ArgumentException(message: "Unknown OAuth token type", paramName: nameof(tokenType));
+                    throw new ArgumentException(message: "Unknown OAuth token type.", paramName: nameof(tokenType));
             }
         }
         internal virtual void Dispose(bool disposing)