diff --git a/java_tools/ts_plugin/src/main/java/com/rusefi/ts_plugin/IntegerDocumentFilter.java b/java_tools/ts_plugin/src/main/java/com/rusefi/ts_plugin/IntegerDocumentFilter.java
deleted file mode 100644
index bcb030f65b..0000000000
--- a/java_tools/ts_plugin/src/main/java/com/rusefi/ts_plugin/IntegerDocumentFilter.java
+++ /dev/null
@@ -1,69 +0,0 @@
-package com.rusefi.ts_plugin;
-
-import javax.swing.*;
-import javax.swing.text.*;
-
-public class IntegerDocumentFilter extends DocumentFilter {
-    public static void install(JTextField jTextField) {
-        PlainDocument doc = (PlainDocument) jTextField.getDocument();
-        doc.setDocumentFilter(new IntegerDocumentFilter());
-    }
-
-    @Override
-    public void insertString(FilterBypass fb, int offset, String string,
-                             AttributeSet attr) throws BadLocationException {
-
-        Document doc = fb.getDocument();
-        StringBuilder sb = new StringBuilder();
-        sb.append(doc.getText(0, doc.getLength()));
-        sb.insert(offset, string);
-
-        if (test(sb.toString())) {
-            super.insertString(fb, offset, string, attr);
-        } else {
-            // warn the user and don't allow the insert
-        }
-    }
-
-    private boolean test(String text) {
-        try {
-            Integer.parseInt(text);
-            return true;
-        } catch (NumberFormatException e) {
-            return false;
-        }
-    }
-
-    @Override
-    public void replace(FilterBypass fb, int offset, int length, String text,
-                        AttributeSet attrs) throws BadLocationException {
-
-        Document doc = fb.getDocument();
-        StringBuilder sb = new StringBuilder();
-        sb.append(doc.getText(0, doc.getLength()));
-        sb.replace(offset, offset + length, text);
-
-        if (test(sb.toString())) {
-            super.replace(fb, offset, length, text, attrs);
-        } else {
-            // warn the user and don't allow the insert
-        }
-
-    }
-
-    @Override
-    public void remove(FilterBypass fb, int offset, int length)
-            throws BadLocationException {
-        Document doc = fb.getDocument();
-        StringBuilder sb = new StringBuilder();
-        sb.append(doc.getText(0, doc.getLength()));
-        sb.delete(offset, offset + length);
-
-        if (test(sb.toString())) {
-            super.remove(fb, offset, length);
-        } else {
-            // warn the user and don't allow the insert
-        }
-
-    }
-}