diff --git a/client/document.go b/client/document.go
index ccbdfd688c..ada47cc8f9 100644
--- a/client/document.go
+++ b/client/document.go
@@ -777,6 +777,11 @@ func (doc *Document) GenerateDocID() (DocID, error) {
 		return DocID{}, err
 	}
 
+	// The DocID must take into consideration the schema root, this ensures that
+	// otherwise identical documents created using different schema will have different
+	// document IDs - we do not want cross-schema docID collisions.
+	bytes = append(bytes, []byte(doc.collectionDefinition.Schema.Root)...)
+
 	cid, err := ccid.NewSHA256CidV1(bytes)
 	if err != nil {
 		return DocID{}, err