diff --git a/docs/book/src/reference/glossary.md b/docs/book/src/reference/glossary.md
index 6b58ead3d96d..65159250acd6 100644
--- a/docs/book/src/reference/glossary.md
+++ b/docs/book/src/reference/glossary.md
@@ -87,7 +87,7 @@ Cluster API Provider Kubevirt
 ### CAPO
 Cluster API Provider OpenStack
 
-## CAPOSC
+### CAPOSC
 Cluster API Provider Outscale
 
 ### CAPOCI