diff --git a/src/content/components/common/input.js b/src/content/components/common/input.js
index 9af9fbe..f285b0c 100644
--- a/src/content/components/common/input.js
+++ b/src/content/components/common/input.js
@@ -1,6 +1,17 @@
+const modifierdKeyName = (name) => {
+  if (name.length === 1) {
+    return name.toUpperCase();
+  } else if (name === 'Escape') {
+    return 'Esc';
+  }
+  return name;
+};
+
 const mapKey = (e) => {
   if (e.ctrlKey) {
-    return '<C-' + e.key.toUpperCase() + '>';
+    return '<C-' + modifierdKeyName(e.key) + '>';
+  } else if (e.shiftKey && e.key.length !== 1) {
+    return '<S-' + modifierdKeyName(e.key) + '>';
   }
   return e.key;
 };
diff --git a/test/content/components/common/input.test.js b/test/content/components/common/input.test.js
index d4f554a..912ac34 100644
--- a/test/content/components/common/input.test.js
+++ b/test/content/components/common/input.test.js
@@ -40,6 +40,30 @@ describe('InputComponent', () => {
     component.onKeyDown({ key: 'a', ctrlKey: true });
   })
 
+  it('press X', () => {
+    let component = new InputComponent(window.document);
+    component.onKey((key) => {
+      expect(key).is.equals('X');
+    });
+    component.onKeyDown({ key: 'X', shiftKey: true });
+  })
+
+  it('press <Shift> + <Esc>', () => {
+    let component = new InputComponent(window.document);
+    component.onKey((key) => {
+      expect(key).is.equals('<S-Esc>');
+    });
+    component.onKeyDown({ key: 'Escape', shiftKey: true });
+  })
+
+  it('press <Ctrl> + <Esc>', () => {
+    let component = new InputComponent(window.document);
+    component.onKey((key) => {
+      expect(key).is.equals('<C-Esc>');
+    });
+    component.onKeyDown({ key: 'Escape', ctrlKey: true });
+  })
+
   it('does not invoke only meta keys', () => {
     let component = new InputComponent(window.document);
     component.onKey((key) => {