diff --git a/src/Actions/Case.ts b/src/Actions/Case.ts
index 52894ee1..c17de6d2 100644
--- a/src/Actions/Case.ts
+++ b/src/Actions/Case.ts
@@ -50,24 +50,6 @@ export class ActionCase {
             .then(() => ActionReveal.primaryCursor());
     }
 
-    @StaticReflect.metadata(SymbolMetadata.Action.isChange, true)
-    static rot13Selections(): Thenable<boolean> {
-        const activeTextEditor = window.activeTextEditor;
-
-        if (!activeTextEditor) {
-            return Promise.resolve(false);
-        }
-
-        return activeTextEditor
-            .edit((editBuilder) => {
-                activeTextEditor.selections.forEach((selection) => {
-                    const text = activeTextEditor.document.getText(selection);
-                    editBuilder.replace(selection, UtilText.rot13(text));
-                });
-            })
-            .then(() => ActionReveal.primaryCursor());
-    }
-
     @StaticReflect.metadata(SymbolMetadata.Action.isChange, true)
     static switchActives(args: { n?: number }): Thenable<boolean> {
         args.n = args.n === undefined ? 1 : args.n;
diff --git a/src/Modes/Visual.ts b/src/Modes/Visual.ts
index 9528aa94..2808fc47 100644
--- a/src/Modes/Visual.ts
+++ b/src/Modes/Visual.ts
@@ -158,10 +158,6 @@ export class ModeVisual extends Mode {
             keys: 'U',
             actions: [ActionCase.uppercaseSelections, ActionSelection.shrinkToStarts],
         },
-        {
-            keys: 'g ?',
-            actions: [ActionCase.rot13Selections, ActionSelection.shrinkToStarts],
-        },
 
         { keys: '=', actions: [ActionFilter.Format.bySelections] },
 
diff --git a/src/Modes/VisualLine.ts b/src/Modes/VisualLine.ts
index fbe90bac..ccd4db22 100644
--- a/src/Modes/VisualLine.ts
+++ b/src/Modes/VisualLine.ts
@@ -155,10 +155,6 @@ export class ModeVisualLine extends Mode {
             keys: 'U',
             actions: [ActionCase.uppercaseSelections, ActionSelection.shrinkToStarts],
         },
-        {
-            keys: 'g ?',
-            actions: [ActionCase.rot13Selections, ActionSelection.shrinkToStarts],
-        },
 
         { keys: '=', actions: [ActionFilter.Format.bySelections] },
 
diff --git a/src/Utils/Text.ts b/src/Utils/Text.ts
index 9379712e..fb1a7d96 100644
--- a/src/Utils/Text.ts
+++ b/src/Utils/Text.ts
@@ -16,12 +16,6 @@ export class UtilText {
         return to;
     }
 
-    static rot13(text: string): string {
-        return text.replace(/[a-z]/gi, (char) =>
-            String.fromCharCode(char.charCodeAt(0) + (char.toUpperCase() > 'M' ? -13 : 13)),
-        );
-    }
-
     static countStringAppearance(searchString: string, text: string): number {
         let count = 0;
         let position = -1;
diff --git a/test/ModeVisual/rot13.test.ts b/test/ModeVisual/rot13.test.ts
deleted file mode 100644
index c017464d..00000000
--- a/test/ModeVisual/rot13.test.ts
+++ /dev/null
@@ -1,35 +0,0 @@
-import * as BlackBox from '../Framework/BlackBox';
-
-suite('Visual: g ?', () => {
-    const testCases: BlackBox.TestCase[] = [
-        {
-            from: 'abcdefghijklm[nopqrstuvwxyz]',
-            inputs: 'g ?',
-            to: 'abcdefghijklm[]abcdefghijklm',
-        },
-        {
-            from: 'AB[CDE]FG',
-            inputs: 'g ?',
-            to: 'AB[]PQRFG',
-        },
-        {
-            from: 'The Quick Brown[ Fox Jumps Ov]er The Lazy Dog.',
-            inputs: 'g ?',
-            to: 'The Quick Brown[] Sbk Whzcf Bier The Lazy Dog.',
-        },
-        {
-            from: 'Abc[123$%^&*()]def',
-            inputs: 'g ?',
-            to: 'Abc[]123$%^&*()def',
-        },
-        {
-            from: 'Bacon\nips[um,\nDOLO]R\nsit.',
-            inputs: 'g ?',
-            to: 'Bacon\nips[]hz,\nQBYBR\nsit.',
-        },
-    ];
-
-    for (let i = 0; i < testCases.length; i++) {
-        BlackBox.run(testCases[i]);
-    }
-});
diff --git a/test/ModeVisualLine/rot13.test.ts b/test/ModeVisualLine/rot13.test.ts
deleted file mode 100644
index a1244882..00000000
--- a/test/ModeVisualLine/rot13.test.ts
+++ /dev/null
@@ -1,35 +0,0 @@
-import * as BlackBox from '../Framework/BlackBox';
-
-suite('VisualLine: g ?', () => {
-    const testCases: BlackBox.TestCase[] = [
-        {
-            from: '[]abcdefghijklmnopqrstuvwxyz',
-            inputs: 'V g ?',
-            to: '[]nopqrstuvwxyzabcdefghijklm',
-        },
-        {
-            from: '[]ABCDEFGHIJKLMNOPQRSTUVWXYZ',
-            inputs: 'V g ?',
-            to: '[]NOPQRSTUVWXYZABCDEFGHIJKLM',
-        },
-        {
-            from: 'abcdefghijklm[]nopqrstuvwxyz\nNOPQRSTUVWXYZABCDEFGHIJKLM\nfoo',
-            inputs: 'V j g ?',
-            to: '[]nopqrstuvwxyzabcdefghijklm\nABCDEFGHIJKLMNOPQRSTUVWXYZ\nfoo',
-        },
-        {
-            from: 'The Quick Brown[] Fox Jumps Over The Lazy Dog.',
-            inputs: 'V g ?',
-            to: '[]Gur Dhvpx Oebja Sbk Whzcf Bire Gur Ynml Qbt.',
-        },
-        {
-            from: 'Abc[123$%^&*()]def',
-            inputs: 'V g ?',
-            to: '[]Nop123$%^&*()qrs',
-        },
-    ];
-
-    for (let i = 0; i < testCases.length; i++) {
-        BlackBox.run(testCases[i]);
-    }
-});