diff --git a/source/lib/compiler.ts b/source/lib/compiler.ts
index 3ca4e21d..5f58cda6 100644
--- a/source/lib/compiler.ts
+++ b/source/lib/compiler.ts
@@ -59,6 +59,7 @@ const expectErrorDiagnosticCodesToIgnore = new Set<DiagnosticCode>([
 	DiagnosticCode.AcceptsTooFewArgumentsToBeUsedAsDecoratorHere,
 	DiagnosticCode.PropertyDoesNotExistOnTypeDidYouMean,
 	DiagnosticCode.ErrorIsOfTypeUnknown,
+	DiagnosticCode.TwoDifferentTypesSameName,
 ]);
 
 type IgnoreDiagnosticResult = 'preserve' | 'ignore' | Location;
diff --git a/source/lib/interfaces.ts b/source/lib/interfaces.ts
index f2c56883..c9aab8b8 100644
--- a/source/lib/interfaces.ts
+++ b/source/lib/interfaces.ts
@@ -58,6 +58,7 @@ export enum DiagnosticCode {
 	IndexSignatureOnlyPermitsReading = 2542,
 	NoOverloadExpectsCountOfArguments = 2575,
 	ThisContextOfTypeNotAssignableToMethodOfThisType = 2684,
+	TwoDifferentTypesSameName = 2719,
 	Type1IsMissingPropertiesFromType2Variant1 = 2739,
 	Type1IsMissingPropertiesFromType2Variant2 = 2740,
 	PropertyMissingInType1ButRequiredInType2 = 2741,
diff --git a/source/test/fixtures/expect-error/missing-diagnostic-code/index.test-d.ts b/source/test/fixtures/expect-error/missing-diagnostic-code/index.test-d.ts
index 5b6a7d59..5b716875 100644
--- a/source/test/fixtures/expect-error/missing-diagnostic-code/index.test-d.ts
+++ b/source/test/fixtures/expect-error/missing-diagnostic-code/index.test-d.ts
@@ -6,3 +6,16 @@ expectError(one('foo', 'bar'));
 
 // 'Found an error that tsd does not currently support (`ts2304`), consider creating an issue on GitHub.'
 expectError(undeclared = one('foo', 'bar'));
+
+// ts2719
+interface T {}
+declare const a: T;
+expectError(class Foo<T> {
+	x: T;
+	constructor(a: T) {
+		this.x = a;
+	}
+	fn() {
+		this.x = a;
+	}
+})