diff --git a/Expressions-in-Rules.md b/Expressions-in-Rules.md
index 4151f486..5d09aebc 100644
--- a/Expressions-in-Rules.md
+++ b/Expressions-in-Rules.md
@@ -1,4 +1,4 @@
-Starting Tasmota version 6.4.1.14, an optional feature for using mathematical expressions in Tasmota rules was introduced. This feature is disabled by default but can be enabled by compiling from source and removing the comment before #define USE_EXPRESSION in my_user_config.h (and of course, #define USE_RULES is also required).
+Starting Tasmota version 6.4.1.14, an optional feature for using mathematical expressions in Tasmota rules was introduced. This feature is disabled by default but can be enabled by compiling from source and removing the comment before #define USE_EXPRESSION in my_user_config.h or even better in user_config_override.h (and of course, #define USE_RULES is also required).
 
 ### Once the feature is enabled, the use of expressions is supported in the following commands:
 * Var