diff --git a/src/org/lff/plugin/dupfinder/Dialog.java b/src/org/lff/plugin/dupfinder/Dialog.java
index d84ef1d..d8fd2c1 100644
--- a/src/org/lff/plugin/dupfinder/Dialog.java
+++ b/src/org/lff/plugin/dupfinder/Dialog.java
@@ -241,8 +241,8 @@ private void applyFilter() {
         String filter = this.filter.getText();
         if (filter.equals("") || filter.trim().equals("")) {
             Messages.showMessageDialog(project,
-                    "Filter is empty", "Information",
-                    Messages.getInformationIcon());
+                    "Filter is empty", "Error",
+                    Messages.getErrorIcon());
         }
         this.listModal.saveList();
         List<String> result = new ArrayList<>();