diff --git a/src/main/java/com/eactive/eai/authserver/custom/KjbMGOAuth2Controller.java b/src/main/java/com/eactive/eai/authserver/custom/KjbMGOAuth2Controller.java
index 9f376ea..b151ac3 100644
--- a/src/main/java/com/eactive/eai/authserver/custom/KjbMGOAuth2Controller.java
+++ b/src/main/java/com/eactive/eai/authserver/custom/KjbMGOAuth2Controller.java
@@ -160,7 +160,7 @@ public class KjbMGOAuth2Controller {
 					"Invalid Mandatory Field {client_secret}");
 		}
 		
-		if (StringUtils.equals(clientDetails.getClientSecret(), clientSecret)) {
+		if (!StringUtils.equals(clientDetails.getClientSecret(), clientSecret)) {
 			throw new JwtAuthException(
 					String.format("%d%s%s", HttpStatus.UNAUTHORIZED.value(), SERVICE_CODE_ACCESS_TOKEN, "00"),
 					"Unauthorized. [Bad client credentials(Client Secret is not match)]");