diff --git a/web/src/test/java/lcsb/mapviewer/web/api/plugin/NewPluginControllerTest.java b/web/src/test/java/lcsb/mapviewer/web/api/plugin/NewPluginControllerTest.java
index 77f5de1e13ab5935e17cda9d05b2b19f002203eb..7d7ad5c1023a5872cea9b14a65a2d51559d27e36 100644
--- a/web/src/test/java/lcsb/mapviewer/web/api/plugin/NewPluginControllerTest.java
+++ b/web/src/test/java/lcsb/mapviewer/web/api/plugin/NewPluginControllerTest.java
@@ -53,7 +53,7 @@ public class NewPluginControllerTest extends ControllerIntegrationTest {
 
   private ObjectMapper objectMapper;
 
-  List<String> pluginHashes = new ArrayList<>();
+  private List<String> pluginHashes = new ArrayList<>();
 
   @Before
   public void setUp() throws Exception {