diff --git a/src/htm/Main.cs b/src/htm/Main.cs
index 5ecc2080..6a7cd4d2 100644
--- a/src/htm/Main.cs
+++ b/src/htm/Main.cs
@@ -57,6 +57,11 @@ namespace thememan
             }
             else
             {
+                /* Environment.SpecialFolder.ApplicationData
+                 * Windows: %APPDATA%
+                 * Unix: ~/.config
+                 * Windows is case-insensitive so 'hexchat' should be fine for both
+                 */
                 hexchatdir = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "hexchat");
 
                 if (!Directory.Exists(hexchatdir))