diff --git a/packages/eslint-plugin/src/rules/no-extra-parens.ts b/packages/eslint-plugin/src/rules/no-extra-parens.ts
index 7dd71ad583b..1b12e38e6ec 100644
--- a/packages/eslint-plugin/src/rules/no-extra-parens.ts
+++ b/packages/eslint-plugin/src/rules/no-extra-parens.ts
@@ -200,7 +200,7 @@ export default util.createRule<Options, MessageIds>({
         }
       },
       SwitchCase(node) {
-        if (node.test.type !== AST_NODE_TYPES.TSAsExpression) {
+        if (node.test && node.test.type !== AST_NODE_TYPES.TSAsExpression) {
           return rules.SwitchCase(node);
         }
       },
diff --git a/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts b/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts
index 64e93de21c3..6d84149efb8 100644
--- a/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts
+++ b/packages/eslint-plugin/tests/rules/no-extra-parens.test.ts
@@ -146,7 +146,7 @@ throw 1;
 const x = !(1 as 1);
 const x = (1 as 1)++;
 function *x() { yield (1 as 1); yield 1; }
-switch (foo) { case 1: case (2 as 2): }
+switch (foo) { case 1: case (2 as 2): break; default: break; }
       `,
       options: [
         'all',
diff --git a/packages/typescript-estree/src/ts-estree/ts-estree.ts b/packages/typescript-estree/src/ts-estree/ts-estree.ts
index ec7640b56b2..6bb54c5a775 100644
--- a/packages/typescript-estree/src/ts-estree/ts-estree.ts
+++ b/packages/typescript-estree/src/ts-estree/ts-estree.ts
@@ -928,7 +928,7 @@ export interface Super extends BaseNode {
 
 export interface SwitchCase extends BaseNode {
   type: AST_NODE_TYPES.SwitchCase;
-  test: Expression;
+  test: Expression | null;
   consequent: Statement[];
 }