diff --git a/polling-app-server/src/main/java/com/example/polls/security/JwtAuthenticationFilter.java b/polling-app-server/src/main/java/com/example/polls/security/JwtAuthenticationFilter.java
index e25e71bc..1bc1d058 100644
--- a/polling-app-server/src/main/java/com/example/polls/security/JwtAuthenticationFilter.java
+++ b/polling-app-server/src/main/java/com/example/polls/security/JwtAuthenticationFilter.java
@@ -58,7 +58,7 @@ protected void doFilterInternal(HttpServletRequest request, HttpServletResponse
     private String getJwtFromRequest(HttpServletRequest request) {
         String bearerToken = request.getHeader("Authorization");
         if (StringUtils.hasText(bearerToken) && bearerToken.startsWith("Bearer ")) {
-            return bearerToken.substring(7, bearerToken.length());
+            return bearerToken.substring(7);
         }
         return null;
     }