diff --git a/src/main/java/seedu/address/model/UserPrefs.java b/src/main/java/seedu/address/model/UserPrefs.java
index f3fe9354868..5591512eca8 100644
--- a/src/main/java/seedu/address/model/UserPrefs.java
+++ b/src/main/java/seedu/address/model/UserPrefs.java
@@ -14,7 +14,7 @@
 public class UserPrefs implements ReadOnlyUserPrefs {
 
     private GuiSettings guiSettings = new GuiSettings();
-    private Path addressBookFilePath = Paths.get("data", "addressbook.json");
+    private Path addressBookFilePath = Paths.get("data", "kontacts.json");
     private Path assignmentFilePath = Paths.get("data", "assignment.json");
 
     /**
diff --git a/src/test/data/JsonUserPrefsStorageTest/ExtraValuesUserPref.json b/src/test/data/JsonUserPrefsStorageTest/ExtraValuesUserPref.json
index 1037548a9cd..ba7e03c015f 100644
--- a/src/test/data/JsonUserPrefsStorageTest/ExtraValuesUserPref.json
+++ b/src/test/data/JsonUserPrefsStorageTest/ExtraValuesUserPref.json
@@ -9,5 +9,5 @@
       "z" : 99
     }
   },
-  "addressBookFilePath" : "addressbook.json"
+  "addressBookFilePath" : "kontacts.json"
 }
diff --git a/src/test/data/JsonUserPrefsStorageTest/TypicalUserPref.json b/src/test/data/JsonUserPrefsStorageTest/TypicalUserPref.json
index b819bed900a..3bd7842e039 100644
--- a/src/test/data/JsonUserPrefsStorageTest/TypicalUserPref.json
+++ b/src/test/data/JsonUserPrefsStorageTest/TypicalUserPref.json
@@ -7,5 +7,5 @@
       "y" : 100
     }
   },
-  "addressBookFilePath" : "addressbook.json"
+  "addressBookFilePath" : "kontacts.json"
 }
diff --git a/src/test/java/seedu/address/logic/LogicManagerTest.java b/src/test/java/seedu/address/logic/LogicManagerTest.java
index 60a27581aff..274c0e668b7 100644
--- a/src/test/java/seedu/address/logic/LogicManagerTest.java
+++ b/src/test/java/seedu/address/logic/LogicManagerTest.java
@@ -48,7 +48,7 @@ public class LogicManagerTest {
     @BeforeEach
     public void setUp() {
         JsonAddressBookStorage addressBookStorage =
-                new JsonAddressBookStorage(temporaryFolder.resolve("addressBook.json"));
+                new JsonAddressBookStorage(temporaryFolder.resolve("kontacts.json"));
         JsonUserPrefsStorage userPrefsStorage = new JsonUserPrefsStorage(temporaryFolder.resolve("userPrefs.json"));
         JsonPredefinedAssignmentDataStorage predefinedAssignmentDataStorage =
                 new JsonPredefinedAssignmentDataStorage(temporaryFolder.resolve("asign"));
diff --git a/src/test/java/seedu/address/storage/JsonUserPrefsStorageTest.java b/src/test/java/seedu/address/storage/JsonUserPrefsStorageTest.java
index ed0a413526a..08fab87e10d 100644
--- a/src/test/java/seedu/address/storage/JsonUserPrefsStorageTest.java
+++ b/src/test/java/seedu/address/storage/JsonUserPrefsStorageTest.java
@@ -73,7 +73,7 @@ public void readUserPrefs_extraValuesInFile_extraValuesIgnored() throws DataLoad
     private UserPrefs getTypicalUserPrefs() {
         UserPrefs userPrefs = new UserPrefs();
         userPrefs.setGuiSettings(new GuiSettings(1000, 500, 300, 100));
-        userPrefs.setAddressBookFilePath(Paths.get("addressbook.json"));
+        userPrefs.setAddressBookFilePath(Paths.get("kontacts.json"));
         return userPrefs;
     }