diff --git a/src/components/DataSheetGrid.tsx b/src/components/DataSheetGrid.tsx
index 4a38007e..cd3aa070 100644
--- a/src/components/DataSheetGrid.tsx
+++ b/src/components/DataSheetGrid.tsx
@@ -28,6 +28,7 @@ import deepEqual from 'fast-deep-equal'
 import { ContextMenu } from './ContextMenu'
 import {
   encodeHtml,
+  isPrintableUnicode,
   parseTextHtmlData,
   parseTextPlainData,
 } from '../utils/copyPasting'
@@ -1456,7 +1457,7 @@ export const DataSheetGrid = React.memo(
             )
             event.preventDefault()
           } else if (
-            (event.key.match(/^[ -~]$/) || event.code.match(/Key[A-Z\p{L}]$/u)) &&
+            (isPrintableUnicode(event.key) || event.code.match(/Key[A-Z]$/)) &&
             !event.ctrlKey &&
             !event.metaKey &&
             !event.altKey
diff --git a/src/utils/copyPasting.test.ts b/src/utils/copyPasting.test.ts
index 7f359226..876bfe0e 100644
--- a/src/utils/copyPasting.test.ts
+++ b/src/utils/copyPasting.test.ts
@@ -2,6 +2,7 @@ import {
   parseTextPlainData,
   parseTextHtmlData,
   encodeHtml,
+  isPrintableUnicode,
 } from './copyPasting'
 import { JSDOM } from 'jsdom'
 
@@ -157,3 +158,23 @@ test('encodeHtml', () => {
     '<div title="foo'bar">baz</div>'
   )
 })
+
+test('isPrintableUnicode', () => {
+  expect(isPrintableUnicode('a')).toBe(true)
+  expect(isPrintableUnicode('ş')).toBe(true)
+  expect(isPrintableUnicode('Ğ')).toBe(true)
+  expect(isPrintableUnicode('中')).toBe(true)
+  expect(isPrintableUnicode('©')).toBe(true)
+  expect(isPrintableUnicode('5')).toBe(true)
+  expect(isPrintableUnicode('!')).toBe(true)
+  expect(isPrintableUnicode('.')).toBe(true)
+  expect(isPrintableUnicode(':')).toBe(true)
+  expect(isPrintableUnicode('[')).toBe(true)
+  expect(isPrintableUnicode('\x0B')).toBe(false) // Vertical Tab
+  expect(isPrintableUnicode('\x7F')).toBe(false) // Delete
+  expect(isPrintableUnicode('\r')).toBe(false)
+  expect(isPrintableUnicode(' ')).toBe(false)
+  expect(isPrintableUnicode('\t')).toBe(false)
+  expect(isPrintableUnicode('\n')).toBe(false)
+  expect(isPrintableUnicode('\x90')).toBe(false) // Non-printable character in the extended ASCII range
+})
diff --git a/src/utils/copyPasting.ts b/src/utils/copyPasting.ts
index 5fbc5406..febf0bd1 100644
--- a/src/utils/copyPasting.ts
+++ b/src/utils/copyPasting.ts
@@ -103,3 +103,7 @@ export const encodeHtml = (str: string) => {
     .replace(/"/g, '"')
     .replace(/'/g, ''')
 }
+
+export const isPrintableUnicode = (str: string): boolean => {
+  return str.match(/^[^\x00-\x20\x7F-\x9F]$/) !== null
+}