diff --git a/source/reference/current-op.txt b/source/reference/current-op.txt
index 7054761061f..b939956cecc 100644
--- a/source/reference/current-op.txt
+++ b/source/reference/current-op.txt
@@ -99,8 +99,10 @@ depending on the kind of operation and its state.
 
 .. data:: currentOp.active
 
-   A boolean value, that is ``true`` if the operation is currently running
+   A boolean value, that is ``true`` if the operation has started
    or ``false`` if the operation is queued and waiting for a lock to run.
+   :data:`~currentOp.active` may be ``true`` even if the operation has
+   yielded to another operation.
 
 .. data:: currentOp.secs_running