diff --git a/Marlin/src/inc/Conditionals_adv.h b/Marlin/src/inc/Conditionals_adv.h
index 9c3fe6bfd3..7df965890f 100644
--- a/Marlin/src/inc/Conditionals_adv.h
+++ b/Marlin/src/inc/Conditionals_adv.h
@@ -23,7 +23,7 @@
 
 /**
  * Conditionals_adv.h
- * Defines that depend on advanced configuration.
+ * Conditionals set before pins.h and which depend on Configuration_adv.h.
  */
 
 #ifndef AXIS_RELATIVE_MODES
diff --git a/Marlin/src/inc/Conditionals_post.h b/Marlin/src/inc/Conditionals_post.h
index 37f0a5cbe5..b107ad03ae 100644
--- a/Marlin/src/inc/Conditionals_post.h
+++ b/Marlin/src/inc/Conditionals_post.h
@@ -23,7 +23,7 @@
 
 /**
  * Conditionals_post.h
- * Defines that depend on configuration but are not editable.
+ * Internal defines that depend on Configurations and Pins but are not user-editable.
  */
 
 #ifdef GITHUB_ACTIONS