diff --git a/mod.config b/mod.config
index 19dfb7b..9f1e423 100644
--- a/mod.config
+++ b/mod.config
@@ -5,7 +5,7 @@
 ##############################################################################
 
 # The id of the mod packaged by this project.
-# This must exist as a directory in the mods directory.
+# This must exist as a directory in the mods directory and should not contain spaces.
 MOD_ID="example"
 
 # The OpenRA engine version to use for this project.