diff --git a/designer-base/src/main/java/com/fr/design/data/datapane/connect/JDBCDefPane.java b/designer-base/src/main/java/com/fr/design/data/datapane/connect/JDBCDefPane.java
index 22c3ac82e9..d999962021 100644
--- a/designer-base/src/main/java/com/fr/design/data/datapane/connect/JDBCDefPane.java
+++ b/designer-base/src/main/java/com/fr/design/data/datapane/connect/JDBCDefPane.java
@@ -482,6 +482,9 @@ public class JDBCDefPane extends JPanel {
                 updateURL();
             } else {
                 portTextField.setText(port.replaceAll(e.getKeyChar() + "", ""));
+                if (!isPortValid(portTextField.getText())) {
+                    portTextField.setText("");
+                }
             }
         }
     };