diff --git a/graph/iterator/hasa_iterator.go b/graph/iterator/hasa_iterator.go
index 031c3b0..21dbb16 100644
--- a/graph/iterator/hasa_iterator.go
+++ b/graph/iterator/hasa_iterator.go
@@ -247,6 +247,9 @@ func (it *HasA) Stats() graph.IteratorStats {
 }
 
 // Close the subiterator, the result iterator (if any) and the HasA.
+//
+// Note: as this involves closing multiple iterators, only the first error
+// encountered while closing will be reported (if any).
 func (it *HasA) Close() error {
 	var ret error
 
diff --git a/graph/iterator/linksto_iterator.go b/graph/iterator/linksto_iterator.go
index bf51293..0b2f9c4 100644
--- a/graph/iterator/linksto_iterator.go
+++ b/graph/iterator/linksto_iterator.go
@@ -181,6 +181,9 @@ func (it *LinksTo) Result() graph.Value {
 }
 
 // Close our subiterators.
+//
+// Note: as this involves closing multiple subiterators, only the first error
+// encountered while closing will be reported (if any).
 func (it *LinksTo) Close() error {
 	var ret error