diff --git a/designer-base/src/main/java/com/fr/file/FILEChooserPane.java b/designer-base/src/main/java/com/fr/file/FILEChooserPane.java
index 01d0cf251b..efb1e3a38b 100644
--- a/designer-base/src/main/java/com/fr/file/FILEChooserPane.java
+++ b/designer-base/src/main/java/com/fr/file/FILEChooserPane.java
@@ -502,13 +502,12 @@ public class FILEChooserPane extends BasicPane {
         String fileNameWithOutExtension = fileName.substring(0, lastDotIndex);
         String fileNameExtension = fileName.substring(lastDotIndex);
         FileExtension fileExtension = FileExtension.parse(fileNameExtension);
-        boolean accept = StringUtils.isEmpty(fileName)
-                        || StringUtils.isEmpty(filterExtension)
-                        || fileFilter.containsExtension(fileExtension.getExtension())
-                        || !ComparatorUtils.equals(fileNameExtension, filterExtension);
-        if (accept) {
+        if (StringUtils.isEmpty(fileName) || StringUtils.isEmpty(filterExtension) || fileFilter.containsExtension(fileExtension.getExtension())) {
             return fileName;
         }
+        if (!ComparatorUtils.equals(fileNameExtension, filterExtension)) {
+            return fileName + filterExtension;
+        }
         return fileNameWithOutExtension + filterExtension;
     }
 
diff --git a/designer-base/src/test/java/com/fr/file/FILEChooserPaneTest.java b/designer-base/src/test/java/com/fr/file/FILEChooserPaneTest.java
index 12723fbd11..79a3ea0f2e 100644
--- a/designer-base/src/test/java/com/fr/file/FILEChooserPaneTest.java
+++ b/designer-base/src/test/java/com/fr/file/FILEChooserPaneTest.java
@@ -25,11 +25,11 @@ public class FILEChooserPaneTest {
 
         ChooseFileFilter chooseFileFilter2 = new ChooseFileFilter(FileExtension.CPTX, StringUtils.EMPTY);
         String result3 = Reflect.on(chooserPane).call("calProperFileName", "WorkBook1.cpt", chooseFileFilter2).get();
-        Assert.assertEquals("WorkBook1.cpt", result3);
+        Assert.assertEquals("WorkBook1.cpt.cptx", result3);
 
         ChooseFileFilter chooseFileFilter3 = new ChooseFileFilter(FileExtension.CPT, StringUtils.EMPTY);
         String result4 = Reflect.on(chooserPane).call("calProperFileName", "WorkBook1.cptx", chooseFileFilter3).get();
-        Assert.assertEquals("WorkBook1.cptx", result4);
+        Assert.assertEquals("WorkBook1.cptx.cpt", result4);
 
         ChooseFileFilter chooseFileFilter5 = new ChooseFileFilter(FileExtension.CPTX, StringUtils.EMPTY);
         String result5 = Reflect.on(chooserPane).call("calProperFileName", "WorkBook1.cptx", chooseFileFilter5).get();
@@ -37,7 +37,7 @@ public class FILEChooserPaneTest {
 
         ChooseFileFilter chooseFileFilter6 = new ChooseFileFilter(FileExtension.CPT, StringUtils.EMPTY);
         String result6 = Reflect.on(chooserPane).call("calProperFileName", "WorkBook1.xls", chooseFileFilter6).get();
-        Assert.assertEquals("WorkBook1.xls", result6);
+        Assert.assertEquals("WorkBook1.xls.cpt", result6);
 
     }