diff --git a/src/test/kotlin/ExtensionTest.kt b/src/test/kotlin/ExtensionTest.kt
index 3b5efb8..be7ebcb 100644
--- a/src/test/kotlin/ExtensionTest.kt
+++ b/src/test/kotlin/ExtensionTest.kt
@@ -108,6 +108,18 @@ class ExtensionTest {
       )
   }
 
+  @Test
+  fun parseFrom_malformedRotDeviceLocked_successfullyParsed() {
+    val keyDescription =
+      KeyDescription.parseFrom(
+        testData
+          .resolve("invalid/malformed_rot_device_locked.pem")
+          .inputStream()
+          .asX509Certificate()
+      )
+    assertThat(keyDescription?.hardwareEnforced?.rootOfTrust?.deviceLocked).isTrue()
+  }
+
   @Test
   fun parseFrom_invalidPatchLevel_returnsNull(
     @TestParameter("202400", "00000000", "2000231") patchLevel: String
diff --git a/testdata/invalid/malformed_rot_device_locked.pem b/testdata/invalid/malformed_rot_device_locked.pem
new file mode 100644
index 0000000..b944714
--- /dev/null
+++ b/testdata/invalid/malformed_rot_device_locked.pem
@@ -0,0 +1,83 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
+-----BEGIN CERTIFICATE-----
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\ No newline at end of file