diff --git a/pkg/sbom/generator/spdx/spdx.go b/pkg/sbom/generator/spdx/spdx.go
index baea159a9..84f549e1e 100644
--- a/pkg/sbom/generator/spdx/spdx.go
+++ b/pkg/sbom/generator/spdx/spdx.go
@@ -322,12 +322,12 @@ func copySBOMElements(sourceDoc, targetDoc *Document, todo map[string]struct{},
 
 		done[f.ID] = struct{}{}
 
+		f.Name = strings.TrimPrefix(f.Name, "/") // Strip leading slashes, which SPDX doesn't like.
+
 		if _, ok := ownedFiles[f.Name]; !ok {
 			continue
 		}
 
-		f.Name = strings.TrimPrefix(f.Name, "/") // Strip leading slashes, which SPDX doesn't like.
-
 		targetDoc.Files = append(targetDoc.Files, f)
 	}