diff --git a/solution/3400-3499/3465.Find Products with Valid Serial Numbers/README.md b/solution/3400-3499/3465.Find Products with Valid Serial Numbers/README.md
index 2246158fb2d19..d8391013551d7 100644
--- a/solution/3400-3499/3465.Find Products with Valid Serial Numbers/README.md	
+++ b/solution/3400-3499/3465.Find Products with Valid Serial Numbers/README.md	
@@ -113,7 +113,7 @@ tags:
 # Write your MySQL query statement below
 SELECT product_id, product_name, description
 FROM products
-WHERE description REGEXP '\\bSN[0-9]{4}-[0-9]{4}\\b'
+WHERE description REGEXP '(?-i)\\bSN[0-9]{4}-[0-9]{4}\\b'
 ORDER BY 1;
 ```
 
diff --git a/solution/3400-3499/3465.Find Products with Valid Serial Numbers/README_EN.md b/solution/3400-3499/3465.Find Products with Valid Serial Numbers/README_EN.md
index 8cc4e87aa3017..b49274cf0753c 100644
--- a/solution/3400-3499/3465.Find Products with Valid Serial Numbers/README_EN.md	
+++ b/solution/3400-3499/3465.Find Products with Valid Serial Numbers/README_EN.md	
@@ -112,7 +112,7 @@ Based on the above rules, we can use a regular expression to match valid serial
 # Write your MySQL query statement below
 SELECT product_id, product_name, description
 FROM products
-WHERE description REGEXP '\\bSN[0-9]{4}-[0-9]{4}\\b'
+WHERE description REGEXP '(?-i)\\bSN[0-9]{4}-[0-9]{4}\\b'
 ORDER BY 1;
 ```
 
diff --git a/solution/3400-3499/3465.Find Products with Valid Serial Numbers/Solution.sql b/solution/3400-3499/3465.Find Products with Valid Serial Numbers/Solution.sql
index d5c646b009f03..97f44c9600ebc 100644
--- a/solution/3400-3499/3465.Find Products with Valid Serial Numbers/Solution.sql	
+++ b/solution/3400-3499/3465.Find Products with Valid Serial Numbers/Solution.sql	
@@ -1,5 +1,5 @@
 # Write your MySQL query statement below
 SELECT product_id, product_name, description
 FROM products
-WHERE description REGEXP '\\bSN[0-9]{4}-[0-9]{4}\\b'
+WHERE description REGEXP '(?-i)\\bSN[0-9]{4}-[0-9]{4}\\b'
 ORDER BY 1;