diff --git a/src/main/java/de/hitec/nhplus/nurse/Nurse.java b/src/main/java/de/hitec/nhplus/nurse/Nurse.java
index b0dba07..22c4b49 100644
--- a/src/main/java/de/hitec/nhplus/nurse/Nurse.java
+++ b/src/main/java/de/hitec/nhplus/nurse/Nurse.java
@@ -139,7 +139,7 @@ public class Nurse extends Person {
                 .add("FirstName: " + this.getFirstName())
                 .add("SurName: " + this.getSurName())
                 .add("PhoneNumber: " + this.getPhoneNumber())
-                .add("IsLocked: ") + this.isLocked()
+                .add("IsLocked: " + this.isLocked())
                 .toString();
 
     }