diff --git a/src/services/formatting/rules.ts b/src/services/formatting/rules.ts
index 075bfdcc627..2da93eac7b6 100644
--- a/src/services/formatting/rules.ts
+++ b/src/services/formatting/rules.ts
@@ -240,11 +240,12 @@ export function getAllRules(): RuleSpec[] {
         rule("NoSpaceBetweenCloseParenAndAngularBracket", SyntaxKind.CloseParenToken, SyntaxKind.LessThanToken, [isNonJsxSameLineTokenContext, isTypeArgumentOrParameterOrAssertionContext], RuleAction.DeleteSpace),
         rule("NoSpaceAfterOpenAngularBracket", SyntaxKind.LessThanToken, anyToken, [isNonJsxSameLineTokenContext, isTypeArgumentOrParameterOrAssertionContext], RuleAction.DeleteSpace),
         rule("NoSpaceBeforeCloseAngularBracket", anyToken, SyntaxKind.GreaterThanToken, [isNonJsxSameLineTokenContext, isTypeArgumentOrParameterOrAssertionContext], RuleAction.DeleteSpace),
-        rule("NoSpaceAfterCloseAngularBracket",
-            SyntaxKind.GreaterThanToken,
-            [SyntaxKind.OpenParenToken, SyntaxKind.OpenBracketToken, SyntaxKind.GreaterThanToken, SyntaxKind.CommaToken],
-            [isNonJsxSameLineTokenContext, isTypeArgumentOrParameterOrAssertionContext, isNotFunctionDeclContext /*To prevent an interference with the SpaceBeforeOpenParenInFuncDecl rule*/],
-            RuleAction.DeleteSpace),
+        rule("NoSpaceAfterCloseAngularBracket", SyntaxKind.GreaterThanToken, [SyntaxKind.OpenParenToken, SyntaxKind.OpenBracketToken, SyntaxKind.GreaterThanToken, SyntaxKind.CommaToken], [
+            isNonJsxSameLineTokenContext,
+            isTypeArgumentOrParameterOrAssertionContext,
+            isNotFunctionDeclContext /*To prevent an interference with the SpaceBeforeOpenParenInFuncDecl rule*/,
+            isNonTypeAssertionContext
+        ], RuleAction.DeleteSpace),
 
         // decorators
         rule("SpaceBeforeAt", [SyntaxKind.CloseParenToken, SyntaxKind.Identifier], SyntaxKind.AtToken, [isNonJsxSameLineTokenContext], RuleAction.InsertSpace),
@@ -835,6 +836,10 @@ function isTypeAssertionContext(context: FormattingContext): boolean {
     return context.contextNode.kind === SyntaxKind.TypeAssertionExpression;
 }
 
+function isNonTypeAssertionContext(context: FormattingContext): boolean {
+    return !isTypeAssertionContext(context);
+}
+
 function isVoidOpContext(context: FormattingContext): boolean {
     return context.currentTokenSpan.kind === SyntaxKind.VoidKeyword && context.currentTokenParent.kind === SyntaxKind.VoidExpression;
 }
diff --git a/tests/cases/fourslash/formatInsertSpaceAfterTypeAssertion.ts b/tests/cases/fourslash/formatInsertSpaceAfterTypeAssertion.ts
new file mode 100644
index 00000000000..ee3dbd0c05f
--- /dev/null
+++ b/tests/cases/fourslash/formatInsertSpaceAfterTypeAssertion.ts
@@ -0,0 +1,19 @@
+/// <reference path="fourslash.ts" />
+
+////let a = <string> "";
+////let b = <number> 1;
+////let c = <any[]> [];
+////let d = <string[]> [];
+////let e = <string[]> ["e"];
+
+format.setFormatOptions({
+    insertSpaceAfterTypeAssertion: true,
+})
+format.document();
+verify.currentFileContentIs(
+`let a=<string> "";
+let b=<number> 1;
+let c=<any[]> [];
+let d=<string[]> [];
+let e=<string[]> ["e"];`
+);