diff --git a/src/main/java/com/sponus/sponusbe/auth/jwt/filter/CustomLoginFilter.java b/src/main/java/com/sponus/sponusbe/auth/jwt/filter/CustomLoginFilter.java
index 15e2fe5b..2dfdf374 100644
--- a/src/main/java/com/sponus/sponusbe/auth/jwt/filter/CustomLoginFilter.java
+++ b/src/main/java/com/sponus/sponusbe/auth/jwt/filter/CustomLoginFilter.java
@@ -109,7 +109,7 @@ protected void unsuccessfulAuthentication(
 		);
 	}
 
-	public Map<String, Object> getBody(HttpServletRequest request) throws IOException {
+	private Map<String, Object> getBody(HttpServletRequest request) throws IOException {
 		StringBuilder stringBuilder = new StringBuilder();
 		String line;
 
diff --git a/src/main/java/com/sponus/sponusbe/auth/jwt/util/JsonUtil.java b/src/main/java/com/sponus/sponusbe/auth/jwt/util/JsonUtil.java
deleted file mode 100644
index 11685970..00000000
--- a/src/main/java/com/sponus/sponusbe/auth/jwt/util/JsonUtil.java
+++ /dev/null
@@ -1,43 +0,0 @@
-package com.sponus.sponusbe.auth.jwt.util;
-
-import java.io.BufferedReader;
-import java.io.IOException;
-import java.io.InputStreamReader;
-import java.util.Map;
-
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.core.type.TypeReference;
-import com.fasterxml.jackson.databind.ObjectMapper;
-
-import jakarta.servlet.http.HttpServletRequest;
-import lombok.AccessLevel;
-import lombok.NoArgsConstructor;
-
-@NoArgsConstructor(access = AccessLevel.PRIVATE)
-public class JsonUtil {
-
-	public static Map<String, Object> getBody(HttpServletRequest request) throws IOException {
-		return convertJsonToMap(
-			readRequestBody(request)
-		);
-	}
-
-	private static String readRequestBody(HttpServletRequest request) throws IOException {
-		StringBuilder stringBuilder = new StringBuilder();
-		BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(request.getInputStream()));
-
-		char[] charBuffer = new char[128];
-
-		int bytesRead;
-		while ((bytesRead = bufferedReader.read(charBuffer)) > 0) {
-			stringBuilder.append(charBuffer, 0, bytesRead);
-		}
-
-		return stringBuilder.toString();
-	}
-
-	private static Map<String, Object> convertJsonToMap(String json) throws JsonProcessingException {
-		return new ObjectMapper().readValue(json, new TypeReference<>() {
-		});
-	}
-}