diff --git a/src/main/java/com/cmhi/cf/misc/ObjectMapperProvider.java b/src/main/java/com/cmhi/cf/misc/ObjectMapperProvider.java
index 290b2b7..8918300 100644
--- a/src/main/java/com/cmhi/cf/misc/ObjectMapperProvider.java
+++ b/src/main/java/com/cmhi/cf/misc/ObjectMapperProvider.java
@@ -1,6 +1,7 @@
 package com.cmhi.cf.misc;
 
 import com.fasterxml.jackson.databind.ObjectMapper;
+import org.jetbrains.annotations.NotNull;
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.ApplicationContextAware;
 import org.springframework.stereotype.Component;
@@ -10,7 +11,7 @@ public class ObjectMapperProvider implements ApplicationContextAware {
     private static ApplicationContext context;
 
     @Override
-    public void setApplicationContext(ApplicationContext applicationContext) {
+    public void setApplicationContext(@NotNull ApplicationContext applicationContext) {
         ObjectMapperProvider.context = applicationContext;
     }