diff --git a/pkg/manifest/anaconda_installer_iso_tree.go b/pkg/manifest/anaconda_installer_iso_tree.go
index 91ab42ea83..93603d0e21 100644
--- a/pkg/manifest/anaconda_installer_iso_tree.go
+++ b/pkg/manifest/anaconda_installer_iso_tree.go
@@ -87,6 +87,15 @@ func (p *AnacondaInstallerISOTree) getOSTreeCommits() []ostree.CommitSpec {
 	return []ostree.CommitSpec{*p.commitSpec}
 }
 
+func (p *AnacondaInstallerISOTree) getOSTreeCommitSources() []ostree.SourceSpec {
+	if p.CommitSource == nil {
+		return []ostree.SourceSpec{}
+	}
+	return []ostree.SourceSpec{
+		*p.CommitSource,
+	}
+}
+
 func (p *AnacondaInstallerISOTree) getContainerSpecs() []container.Spec {
 	if p.containerSpec == nil {
 		return []container.Spec{}