diff --git a/Docs/manual.texi b/Docs/manual.texi
index 36a1757d072341b97b95e6fcb169422df15b8772..b25f35f9691a7fdbb9fa52bcbfee2e4eddbee142 100644
--- a/Docs/manual.texi
+++ b/Docs/manual.texi
@@ -44506,7 +44506,7 @@ By default, MySQL searches are case-insensitive (although there are
 some character sets that are never case insensitive, such as @code{czech}).
 That means that if you search with @code{col_name LIKE 'a%'}, you will get all
 column values that start with @code{A} or @code{a}. If you want to make this
-search case-sensitive, use something like @code{INDEX(col_name, "A")=0} to
+search case-sensitive, use something like @code{INSTR(col_name, "A")=1} to
 check a prefix. Or use @code{STRCMP(col_name, "A") = 0} if the column value
 must be exactly @code{"A"}.