diff --git a/staging/src/k8s.io/apiserver/pkg/util/openapi/enablement.go b/staging/src/k8s.io/apiserver/pkg/util/openapi/enablement.go
index 693821ac025..b1db3c42b05 100644
--- a/staging/src/k8s.io/apiserver/pkg/util/openapi/enablement.go
+++ b/staging/src/k8s.io/apiserver/pkg/util/openapi/enablement.go
@@ -68,7 +68,7 @@ func pruneEnums(schema *spec.Schema) *spec.Schema {
 				// note that the new lines before the header should be removed too,
 				// thus the slice range.
 				clone()
-				schema.Description = schema.Description[:headerIndex]
+				schema.Description = strings.TrimSpace(schema.Description[:headerIndex])
 			}
 			if len(schema.Enum) != 0 {
 				// remove the enum field