diff --git a/src/vs/editor/contrib/snippet/snippet.md b/src/vs/editor/contrib/snippet/snippet.md
index ab479c9c08e3e..ce571c614af2f 100644
--- a/src/vs/editor/contrib/snippet/snippet.md
+++ b/src/vs/editor/contrib/snippet/snippet.md
@@ -86,7 +86,6 @@ tabstop     ::= '$' int
                 | '${' int  transform '}'
 placeholder ::= '${' int ':' any '}'
 choice      ::= '${' int '|' text (',' text)* '|}'
-                | '${' int '|' text (',' text)* '|' transform '}'
 variable    ::= '$' var | '${' var }'
                 | '${' var ':' any '}'
                 | '${' var transform '}'
@@ -102,5 +101,3 @@ var         ::= [_a-zA-Z] [_a-zA-Z0-9]*
 int         ::= [0-9]+
 text        ::= .*
 ```
-
-Transformations for placeholders and choices are an extension to the TextMate snippet grammar and only support by Visual Studio Code.
diff --git a/src/vs/editor/contrib/snippet/snippetParser.ts b/src/vs/editor/contrib/snippet/snippetParser.ts
index a51273c773e0b..bf034b00bb3fa 100644
--- a/src/vs/editor/contrib/snippet/snippetParser.ts
+++ b/src/vs/editor/contrib/snippet/snippetParser.ts
@@ -746,13 +746,6 @@ export class SnippetParser {
 							parent.appendChild(placeholder);
 							return true;
 						}
-						if (this._accept(TokenType.Forwardslash)) {
-							// ...|/<regex>/<format>/<options>} -> transform
-							if (this._parseTransform(placeholder)) {
-								parent.appendChild(placeholder);
-								return true;
-							}
-						}
 					}
 				}
 
diff --git a/src/vs/editor/contrib/snippet/test/snippetParser.test.ts b/src/vs/editor/contrib/snippet/test/snippetParser.test.ts
index 649ad400d7905..301c9dd1b81ca 100644
--- a/src/vs/editor/contrib/snippet/test/snippetParser.test.ts
+++ b/src/vs/editor/contrib/snippet/test/snippetParser.test.ts
@@ -254,13 +254,6 @@ suite('SnippetParser', () => {
 		assertTextAndMarker('${1/regex/format/options', '${1/regex/format/options', Text);
 	});
 
-	test('Parser, placeholder with choice and transformation', () => {
-		assertTextAndMarker('${1|one,two,three|/foo/bar/}', 'one', Placeholder);
-		assertTextAndMarker('${1|one|/foo/bar/}', 'one', Placeholder);
-		assertTextAndMarker('${1|one,two,three,|/foo/bar/}', '${1|one,two,three,|/foo/bar/}', Text);
-		assertTextAndMarker('${1|one,/foo/bar/', '${1|one,/foo/bar/', Text);
-	});
-
 	test('No way to escape forward slash in snippet regex #36715', function () {
 		assertMarker('${TM_DIRECTORY/src\\//$1/}', Variable);
 	});