diff --git a/core/src/main/kotlin/net/corda/core/messaging/CordaRPCOps.kt b/core/src/main/kotlin/net/corda/core/messaging/CordaRPCOps.kt
index c2351baa4c..b2816cf04c 100644
--- a/core/src/main/kotlin/net/corda/core/messaging/CordaRPCOps.kt
+++ b/core/src/main/kotlin/net/corda/core/messaging/CordaRPCOps.kt
@@ -392,7 +392,11 @@ interface CordaRPCOps : RPCOps {
     /** Queries attachments metadata */
     fun queryAttachments(query: AttachmentQueryCriteria, sorting: AttachmentSort?): List<AttachmentId>
 
-    /** Returns the node's current time. */
+    /** Returns the node's current time.
+     *
+     * Is a quick RPC, meaning that it is handled outside the node's standard thread pool in order to provide a
+     * quick response even when the node is dealing with a high volume of RPC calls.
+     */
     fun currentNodeTime(): Instant
 
     /**
diff --git a/core/src/main/kotlin/net/corda/core/messaging/RPCOps.kt b/core/src/main/kotlin/net/corda/core/messaging/RPCOps.kt
index e6aa0b79a4..e4e1416e13 100644
--- a/core/src/main/kotlin/net/corda/core/messaging/RPCOps.kt
+++ b/core/src/main/kotlin/net/corda/core/messaging/RPCOps.kt
@@ -8,6 +8,10 @@ import net.corda.core.DoNotImplement
  */
 @DoNotImplement
 interface RPCOps {
-    /** Returns the RPC protocol version. Exists since version 0 so guaranteed to be present. */
+    /** Returns the RPC protocol version. Exists since version 0 so guaranteed to be present.
+     *
+     * Getting this property is handled as a quick RPC, meaning that it is handled outside the node's standard
+     * thread pool in order to provide a quick response even when the node is dealing with a high volume of RPC calls.
+     */
     val protocolVersion: Int
 }
\ No newline at end of file