diff --git a/README.md b/README.md
index 568d841..43ca8b6 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ Variant definitions are subject to change at any time. The latest release can be
 | <a href="variant_yaml/perfume-sprint.yml">VUI-21JUN-01</a> | PANGO: C.37 | This variant is a clade first associated with South America but now observed in USA and Europe |
 | <a href="variant_yaml/kelp-lesser.yml">VUI-21JUL-01</a> | PANGO: B.1.621 | This variant is a clade first associated with Colombia but now seen across the Americas and Europe |
 | <a href="variant_yaml/curtain-oasis.yml">VUI-21OCT-01</a> | PANGO: AY.4.2 | This variant is a sublineage of Delta with spike A222V and Y145H |
-| <a href="variant_yaml/pentagon-refining.yml">VUI-21NOV-01</a> | WHO: Omicron PANGO: B.1.1.529 | This variant is a lineage first identified in Southern Africa and has been exported to several other countries |
+| <a href="variant_yaml/pentagon-refining.yml">VOC-21NOV-01</a> | WHO: Omicron PANGO: B.1.1.529 | This variant is a lineage first identified in Southern Africa and has been exported to several other countries |
 
 ## File format definition