diff --git a/documentation/basic/basic.md b/documentation/basic/basic.md
index d25846e125b..ec5215b1323 100644
--- a/documentation/basic/basic.md
+++ b/documentation/basic/basic.md
@@ -669,7 +669,7 @@ Configuration is mainly done by modifying the file under project directory - rtc
 /* While turning the system FinSH: define the number of historical command lines. */
 #define FINSH_HISTORY_LINES 5
 
-/* While turning the system FinSH: define this macro to open the Tab key, if not defined, close. */
+/* While turning the system FinSH: define this macro to use symbol table in Finsh, if not defined, close. */
 #define FINSH_USING_SYMTAB
 
 /* While turning the system FinSH: define the priority of the thread. */
diff --git a/documentation/finsh/finsh.md b/documentation/finsh/finsh.md
index 1b56c4636e5..1d882d60327 100644
--- a/documentation/finsh/finsh.md
+++ b/documentation/finsh/finsh.md
@@ -421,7 +421,7 @@ The reference configuration example in rtconfig.h is as follows, and can be conf
 /* Record 5 lines of history commands */
 #define FINSH_HISTORY_LINES 5
 
-/* Enable the use of the Tab key */
+/* Enable the use of symbol table */
 #define FINSH_USING_SYMTAB
 /* Turn on description */
 #define FINSH_USING_DESCRIPTION