diff --git a/src/main/java/com/ffii/fpsms/config/security/jwt/JwtRequestFilter.java b/src/main/java/com/ffii/fpsms/config/security/jwt/JwtRequestFilter.java
index b2bcabf..9a9811d 100644
--- a/src/main/java/com/ffii/fpsms/config/security/jwt/JwtRequestFilter.java
+++ b/src/main/java/com/ffii/fpsms/config/security/jwt/JwtRequestFilter.java
@@ -47,7 +47,7 @@ public class JwtRequestFilter extends OncePerRequestFilter {
 				username = jwtTokenUtil.getUsernameFromToken(jwtToken);
 			} catch (ExpiredJwtException e) {
 				// Expected when user leaves tab open; log at WARN without stack to avoid log noise
-				logger.warn("JWT Token has expired: {}", e.getMessage());
+				logger.warn("JWT Token has expired: " + e.getMessage());
 				sendUnauthorizedJson(response, "JWT Token has expired", "TOKEN_EXPIRED");
 				return;
 			} catch (JwtException | IllegalArgumentException e) {