diff --git a/src/utils/string_utils.rs b/src/utils/string_utils.rs
index 5006f20..5549dc9 100644
--- a/src/utils/string_utils.rs
+++ b/src/utils/string_utils.rs
@@ -19,8 +19,8 @@ use regex::Regex;
 /// assert_eq!(res1, "<b>hello world</b>");
 /// ```
 pub fn remove_html_nodes(input: &str) -> String {
-    input.replace("<", "&lt;")
-        .replace(">", "&gt;")
+    input.replace('<', "&lt;")
+        .replace('>', "&gt;")
 }
 
 /// Check out whether a URL is valid or not
@@ -64,14 +64,14 @@ pub fn check_string_before_insert(s: &str) -> bool {
 /// ```
 pub fn check_youtube_id(id: &str) -> bool {
     id.len() >= 5
-        && !id.contains("/")
-        && !id.contains("\\")
-        && !id.contains("@")
-        && !id.contains("&")
-        && !id.contains("?")
-        && !id.contains(".")
-        && !id.contains("'")
-        && !id.contains("\"")
+        && !id.contains('/')
+        && !id.contains('\\')
+        && !id.contains('@')
+        && !id.contains('&')
+        && !id.contains('?')
+        && !id.contains('.')
+        && !id.contains('\'')
+        && !id.contains('\"')
 }