diff --git a/src/Discord.Net.Rest/Entities/Channels/RestForumChannel.cs b/src/Discord.Net.Rest/Entities/Channels/RestForumChannel.cs
index 2859c3019..5ec81a7fc 100644
--- a/src/Discord.Net.Rest/Entities/Channels/RestForumChannel.cs
+++ b/src/Discord.Net.Rest/Entities/Channels/RestForumChannel.cs
@@ -85,6 +85,8 @@ namespace Discord.Rest
                 else
                     DefaultReactionEmoji = null;
             }
+
+            CategoryId = model.CategoryId.GetValueOrDefault();
         }
 
         /// <inheritdoc/>
diff --git a/src/Discord.Net.WebSocket/Entities/Channels/SocketForumChannel.cs b/src/Discord.Net.WebSocket/Entities/Channels/SocketForumChannel.cs
index 0836e844a..9d46bc2aa 100644
--- a/src/Discord.Net.WebSocket/Entities/Channels/SocketForumChannel.cs
+++ b/src/Discord.Net.WebSocket/Entities/Channels/SocketForumChannel.cs
@@ -91,6 +91,8 @@ namespace Discord.WebSocket
                 else
                     DefaultReactionEmoji = null;
             }
+
+            CategoryId = model.CategoryId.GetValueOrDefault();
         }
 
         /// <inheritdoc />