diff --git a/DewPoint.java b/DewPoint.java
index 3594052..69652bb 100644
--- a/DewPoint.java
+++ b/DewPoint.java
@@ -21,7 +21,7 @@ public class DewPoint extends Grootheid
     }
     
     public void display(){
-        GUIboard.writeUpperDigits(current);
+        GUIboard.writeUpperDigits(getCurrent());
         GUIboard.writePageToMatrix("Dauwpunt", "Gemiddelde: " + getAvg(), "");
     }
     
diff --git a/Grootheid.java b/Grootheid.java
index 0e1bf5c..3732586 100644
--- a/Grootheid.java
+++ b/Grootheid.java
@@ -3,10 +3,10 @@ import java.util.ArrayList;
 public class Grootheid
 {
     // instance variables - replace the example below with your own
-    public double avg;
-    public double max;
-    public double min;
-    public double current;
+    private double avg;
+    private double max;
+    private double min;
+    private double current;
 
     //constructor
     public Grootheid(){