diff --git a/PluralKit.Bot/Proxy/ProxyService.cs b/PluralKit.Bot/Proxy/ProxyService.cs
index 1548b1fa..e1267f92 100644
--- a/PluralKit.Bot/Proxy/ProxyService.cs
+++ b/PluralKit.Bot/Proxy/ProxyService.cs
@@ -91,7 +91,7 @@ namespace PluralKit.Bot
             if (ctx.SystemId == null) return false;
             
             // Make sure channel is a guild text channel and this is a normal message
-            if (DiscordUtils.IsValidGuildChannel(channel)) return false;
+            if (!DiscordUtils.IsValidGuildChannel(channel)) return false;
             if (msg.Type != Message.MessageType.Default && msg.Type != Message.MessageType.Reply) return false;
             
             // Make sure author is a normal user