diff --git a/pkg/asset/installconfig/aws/regions.go b/pkg/asset/installconfig/aws/regions.go
index 1453e753d8d..878bb2e3082 100644
--- a/pkg/asset/installconfig/aws/regions.go
+++ b/pkg/asset/installconfig/aws/regions.go
@@ -14,12 +14,9 @@ func knownRegions(architecture types.Architecture) map[string]string {
 	required := rhcos.AMIRegions(architecture)
 
 	regions := make(map[string]string)
-	for _, partition := range endpoints.DefaultPartitions() {
-		for _, partitionRegion := range partition.Regions() {
-			partitionRegion := partitionRegion
-			if required.Has(partitionRegion.ID()) {
-				regions[partitionRegion.ID()] = partitionRegion.Description()
-			}
+	for _, region := range endpoints.AwsPartition().Regions() {
+		if required.Has(region.ID()) {
+			regions[region.ID()] = region.Description()
 		}
 	}
 	return regions