diff --git a/maven/src/org/netbeans/modules/maven/api/customizer/support/CheckBoxUpdater.java b/maven/src/org/netbeans/modules/maven/api/customizer/support/CheckBoxUpdater.java
--- a/maven/src/org/netbeans/modules/maven/api/customizer/support/CheckBoxUpdater.java
+++ b/maven/src/org/netbeans/modules/maven/api/customizer/support/CheckBoxUpdater.java
@@ -74,7 +74,7 @@
             inherited = false;
             component.setFont(component.getFont().deriveFont(Font.BOLD));
 
-            component.setToolTipText(""); //NOI18N
+            component.setToolTipText(null);
         } else {
             component.setToolTipText(NbBundle.getMessage(CheckBoxUpdater.class, "MSG_Value_Inherited")); //NOI18N
             inherited = true;
@@ -103,7 +103,7 @@
     private void setCheckBoxValue(Boolean value, boolean defValue, JCheckBox component) {
         if (value != null) {
             component.setSelected(value.booleanValue());
-            component.setToolTipText(""); //NOI18N
+            component.setToolTipText(null);
             inherited = false;
             component.setFont(component.getFont().deriveFont(Font.BOLD));
         } else {
diff --git a/maven/src/org/netbeans/modules/maven/api/customizer/support/ComboBoxUpdater.java b/maven/src/org/netbeans/modules/maven/api/customizer/support/ComboBoxUpdater.java
--- a/maven/src/org/netbeans/modules/maven/api/customizer/support/ComboBoxUpdater.java
+++ b/maven/src/org/netbeans/modules/maven/api/customizer/support/ComboBoxUpdater.java
@@ -79,7 +79,7 @@
 //            component.setBackground(DEFAULT);
             label.setFont(label.getFont().deriveFont(Font.BOLD));
             
-            component.setToolTipText(""); //NOI18N
+            component.setToolTipText(null);
         }
         @SuppressWarnings("unchecked")
         T val = (T)component.getSelectedItem();
@@ -114,7 +114,7 @@
     private void setComboValue(T value, T projectValue, JComboBox field) {
         if (value != null) {
             field.setSelectedItem(value);
-            component.setToolTipText(""); //NOI18N
+            component.setToolTipText(null);
             inherited = false;
             label.setFont(label.getFont().deriveFont(Font.BOLD));
         } else if (projectValue != null) {
@@ -125,7 +125,7 @@
             inherited = true;
         } else {
             field.setSelectedItem(field.getModel().getElementAt(0));
-            component.setToolTipText(""); //NOI18N
+            component.setToolTipText(null);
             inherited = false;
             label.setFont(label.getFont().deriveFont(Font.BOLD));
       }
diff --git a/maven/src/org/netbeans/modules/maven/api/customizer/support/TextComponentUpdater.java b/maven/src/org/netbeans/modules/maven/api/customizer/support/TextComponentUpdater.java
--- a/maven/src/org/netbeans/modules/maven/api/customizer/support/TextComponentUpdater.java
+++ b/maven/src/org/netbeans/modules/maven/api/customizer/support/TextComponentUpdater.java
@@ -79,7 +79,7 @@
             inherited = false;
 //            component.setBackground(DEFAULT);
             label.setFont(label.getFont().deriveFont(Font.BOLD));
-            component.setToolTipText(""); //NOI18N
+            component.setToolTipText(null);
         }
         setValue(component.getText().trim().length() == 0 ? null : component.getText());
         if (component.getText().trim().length() == 0) {
@@ -121,7 +121,7 @@
     private void setTextFieldValue(String value, String projectValue, JTextComponent field) {
         if (value != null) {
             field.setText(value);
-            component.setToolTipText(""); //NOI18N
+            component.setToolTipText(null);
             inherited = false;
             label.setFont(label.getFont().deriveFont(Font.BOLD));
         } else if (projectValue != null) {
@@ -134,7 +134,7 @@
             inherited = true;
         } else {
             field.setText("");//NOI18N
-            component.setToolTipText("");//NOI18N
+            component.setToolTipText(null);
             inherited = false;
             label.setFont(label.getFont().deriveFont(Font.BOLD));
         }