diff --git a/src/test/java/nl/verheulconsultants/monitorisp/service/ISPControllerTest.java b/src/test/java/nl/verheulconsultants/monitorisp/service/ISPControllerTest.java
index ae40385..b8cb3a1 100644
--- a/src/test/java/nl/verheulconsultants/monitorisp/service/ISPControllerTest.java
+++ b/src/test/java/nl/verheulconsultants/monitorisp/service/ISPControllerTest.java
@@ -50,7 +50,7 @@
 public class ISPControllerTest {
 
     private static final Logger LOGGER = LoggerFactory.getLogger(ISPControllerTest.class);
-    ISPController instance;
+    private static ISPController instance;
 
     /**
      *