diff --git a/designer-base/src/main/java/com/fr/design/gui/ispinner/UnsignedIntUISpinner.java b/designer-base/src/main/java/com/fr/design/gui/ispinner/UnsignedIntUISpinner.java
new file mode 100644
index 000000000..0a04eabf5
--- /dev/null
+++ b/designer-base/src/main/java/com/fr/design/gui/ispinner/UnsignedIntUISpinner.java
@@ -0,0 +1,31 @@
+package com.fr.design.gui.ispinner;
+
+import com.fr.design.gui.itextfield.UIIntNumberField;
+import com.fr.design.gui.itextfield.UINumberField;
+
+/**
+ * Created by IntelliJ IDEA.
+ * Author : Hugh.C
+ * Date: 19-08-28
+ * Time: 下午2:19
+ */
+public class UnsignedIntUISpinner extends UISpinner {
+
+
+    public UnsignedIntUISpinner(double minValue, double maxValue, double dierta) {
+        super(minValue, maxValue, dierta);
+    }
+
+    public UnsignedIntUISpinner(double minValue, double maxValue, double dierta, double defaultValue) {
+        super(minValue, maxValue, dierta, defaultValue);
+    }
+
+    @Override
+    protected UINumberField initNumberField() {
+        return new UIIntNumberField() {
+            public boolean shouldResponseChangeListener() {
+                return false;
+            }
+        };
+    }
+}
\ No newline at end of file
diff --git a/designer-base/src/main/java/com/fr/design/report/WatermarkPane.java b/designer-base/src/main/java/com/fr/design/report/WatermarkPane.java
index e190d4038..40fe942d2 100644
--- a/designer-base/src/main/java/com/fr/design/report/WatermarkPane.java
+++ b/designer-base/src/main/java/com/fr/design/report/WatermarkPane.java
@@ -7,6 +7,7 @@ import com.fr.design.gui.icombobox.UIComboBox;
 import com.fr.design.gui.icontainer.UIScrollPane;
 import com.fr.design.gui.ilable.UILabel;
 import com.fr.design.gui.ispinner.UISpinner;
+import com.fr.design.gui.ispinner.UnsignedIntUISpinner;
 import com.fr.design.gui.style.FRFontPane;
 import com.fr.design.layout.FRGUIPaneFactory;
 import com.fr.design.layout.TableLayout;
@@ -112,8 +113,8 @@ public class WatermarkPane extends BasicPane {
         formulaPane = new TinyFormulaPane();
         fontSizeComboBox = new UIComboBox(FRFontPane.FONT_SIZES);
         fontSizeComboBox.setEditable(true);
-        horizontalGapSpinner = new UISpinner(0, Integer.MAX_VALUE, 1, 200);
-        verticalGapSpinner = new UISpinner(0, Integer.MAX_VALUE, 1, 100);
+        horizontalGapSpinner = new UnsignedIntUISpinner(0, Integer.MAX_VALUE, 1, 200);
+        verticalGapSpinner = new UnsignedIntUISpinner(0, Integer.MAX_VALUE, 1, 100);
         horizontalGapSpinner.setPreferredSize(SPINNER_DIMENSION);
         verticalGapSpinner.setPreferredSize(SPINNER_DIMENSION);
         JPanel fontSizeTypePane = new JPanel(new BorderLayout(10,0));