diff --git a/crates/oxc_transformer/src/decorator/legacy/metadata.rs b/crates/oxc_transformer/src/decorator/legacy/metadata.rs
index eb62e3c32178c..d8a0bee50ea71 100644
--- a/crates/oxc_transformer/src/decorator/legacy/metadata.rs
+++ b/crates/oxc_transformer/src/decorator/legacy/metadata.rs
@@ -548,7 +548,7 @@ impl<'a> LegacyDecoratorMetadata<'a, '_> {
         right: Expression<'a>,
         ctx: &TraverseCtx<'a>,
     ) -> Expression<'a> {
-        let operator = BinaryOperator::StrictEquality;
+        let operator = BinaryOperator::StrictInequality;
         let undefined = ctx.ast.expression_string_literal(SPAN, "undefined", None);
         let typeof_left = ctx.ast.expression_unary(SPAN, UnaryOperator::Typeof, left);
         let left_check = ctx.ast.expression_binary(SPAN, typeof_left, operator, undefined);
diff --git a/tasks/transform_conformance/snapshots/oxc.snap.md b/tasks/transform_conformance/snapshots/oxc.snap.md
index 80edf67bf70b6..ed14af5a0d7bb 100644
--- a/tasks/transform_conformance/snapshots/oxc.snap.md
+++ b/tasks/transform_conformance/snapshots/oxc.snap.md
@@ -1,6 +1,6 @@
 commit: 578ac4df
 
-Passed: 137/221
+Passed: 137/223
 
 # All Passed:
 * babel-plugin-transform-class-static-block
@@ -319,7 +319,29 @@ x Output mismatch
 x Output mismatch
 
 
-# legacy-decorators (2/64)
+# legacy-decorators (2/66)
+* oxc/metadata/bound-type-reference/input.ts
+Symbol reference IDs mismatch for "BoundTypeReference":
+after transform: SymbolId(0): [ReferenceId(1), ReferenceId(3), ReferenceId(4), ReferenceId(5), ReferenceId(6)]
+rebuilt        : SymbolId(0): [ReferenceId(1), ReferenceId(6), ReferenceId(7)]
+Symbol span mismatch for "Example":
+after transform: SymbolId(1): Span { start: 87, end: 94 }
+rebuilt        : SymbolId(2): Span { start: 0, end: 0 }
+Symbol span mismatch for "Example":
+after transform: SymbolId(4): Span { start: 0, end: 0 }
+rebuilt        : SymbolId(3): Span { start: 87, end: 94 }
+
+* oxc/metadata/unbound-type-reference/input.ts
+Symbol span mismatch for "Example":
+after transform: SymbolId(0): Span { start: 6, end: 13 }
+rebuilt        : SymbolId(1): Span { start: 0, end: 0 }
+Symbol span mismatch for "Example":
+after transform: SymbolId(3): Span { start: 0, end: 0 }
+rebuilt        : SymbolId(2): Span { start: 6, end: 13 }
+Unresolved reference IDs mismatch for "UnboundTypeReference":
+after transform: [ReferenceId(1), ReferenceId(2), ReferenceId(3)]
+rebuilt        : [ReferenceId(4), ReferenceId(5)]
+
 * typescript/accessor/decoratorOnClassAccessor1/input.ts
 Scope children mismatch:
 after transform: ScopeId(0): [ScopeId(1), ScopeId(2)]
diff --git a/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/metadata/bound-type-reference/input.ts b/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/metadata/bound-type-reference/input.ts
new file mode 100644
index 0000000000000..4f64db3b604e9
--- /dev/null
+++ b/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/metadata/bound-type-reference/input.ts
@@ -0,0 +1,8 @@
+import { BoundTypeReference } from "./output";
+
+console.log(BoundTypeReference)
+
+class Example {
+	constructor(@dce count: BoundTypeReference) {}
+  prop: BoundTypeReference.Value = 1;
+}
diff --git a/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/metadata/bound-type-reference/output.js b/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/metadata/bound-type-reference/output.js
new file mode 100644
index 0000000000000..f20a0a7b730c9
--- /dev/null
+++ b/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/metadata/bound-type-reference/output.js
@@ -0,0 +1,24 @@
+import { BoundTypeReference } from "./output";
+
+var _ref;
+
+console.log(BoundTypeReference);
+
+let Example = class Example {
+  constructor(count) { }
+  prop = 1;
+};
+
+Example = babelHelpers.decorate(
+  [
+    babelHelpers.decorateMetadata("design:paramtypes", [
+      typeof (_ref =
+        typeof BoundTypeReference !== "undefined" && BoundTypeReference) ===
+        "function"
+        ? _ref
+        : Object,
+    ]),
+    babelHelpers.decorateParam(0, dce),
+  ],
+  Example,
+);
diff --git a/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/metadata/unbound-type-reference/input.ts b/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/metadata/unbound-type-reference/input.ts
new file mode 100644
index 0000000000000..21632fc97f1dd
--- /dev/null
+++ b/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/metadata/unbound-type-reference/input.ts
@@ -0,0 +1,4 @@
+class Example {
+  constructor(@dce count: UnboundTypeReference) {}
+}
+
diff --git a/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/metadata/unbound-type-reference/output.js b/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/metadata/unbound-type-reference/output.js
new file mode 100644
index 0000000000000..da52b61f7e615
--- /dev/null
+++ b/tasks/transform_conformance/tests/legacy-decorators/test/fixtures/oxc/metadata/unbound-type-reference/output.js
@@ -0,0 +1,18 @@
+var _ref;
+let Example = class Example {
+	constructor(count) {}
+};
+
+Example = babelHelpers.decorate(
+	[
+		babelHelpers.decorateMetadata("design:paramtypes", [
+			typeof (_ref =
+				typeof UnboundTypeReference !== "undefined" && UnboundTypeReference) ===
+			"function"
+				? _ref
+				: Object,
+		]),
+		babelHelpers.decorateParam(0, dce),
+	],
+	Example,
+);