diff --git a/source/reference/aggregation.txt b/source/reference/aggregation.txt index 35e76b4337e..dccbba7af24 100644 --- a/source/reference/aggregation.txt +++ b/source/reference/aggregation.txt @@ -877,7 +877,7 @@ Multi-Expressions .. expression:: $ifNull Takes an array with two expressions. :expression:`$ifNull` returns - the first expression if it evaluates to a non-false + the first expression if it evaluates to a non-null value. Otherwise, :expression:`$ifNull` returns the second expression’s value.