diff --git a/core/commonMain/src/kotlinx/serialization/descriptors/SerialDescriptors.kt b/core/commonMain/src/kotlinx/serialization/descriptors/SerialDescriptors.kt
index 745fef937..d76b64b48 100644
--- a/core/commonMain/src/kotlinx/serialization/descriptors/SerialDescriptors.kt
+++ b/core/commonMain/src/kotlinx/serialization/descriptors/SerialDescriptors.kt
@@ -71,7 +71,7 @@ public fun buildClassSerialDescriptor(
  * ```
  * object LongAsStringSerializer : KSerializer<Long> {
  *     override val descriptor: SerialDescriptor =
- *         PrimitiveDescriptor("kotlinx.serialization.LongAsStringSerializer", PrimitiveKind.STRING)
+ *         PrimitiveSerialDescriptor("kotlinx.serialization.LongAsStringSerializer", PrimitiveKind.STRING)
  *
  *     override fun serialize(encoder: Encoder, value: Long) {
  *         encoder.encodeString(value.toString())