diff --git a/pkg/asset/machines/powervs/machinesets.go b/pkg/asset/machines/powervs/machinesets.go
index 9ab3e7948aa..832cd4f594e 100644
--- a/pkg/asset/machines/powervs/machinesets.go
+++ b/pkg/asset/machines/powervs/machinesets.go
@@ -31,7 +31,9 @@ func MachineSets(clusterID string, config *types.InstallConfig, pool *types.Mach
 	mpool := pool.Platform.PowerVS
 
 	if platform.ClusterOSImage != "" {
-		mpool.ImageID = platform.ClusterOSImage
+		image = platform.ClusterOSImage
+	} else {
+		image = fmt.Sprintf("rhcos-%s", clusterID)
 	}
 	if platform.PVSNetworkName != "" {
 		network = platform.PVSNetworkName