diff --git a/cmd/csaf_aggregator/indices.go b/cmd/csaf_aggregator/indices.go
index c4473f1..e2524a4 100644
--- a/cmd/csaf_aggregator/indices.go
+++ b/cmd/csaf_aggregator/indices.go
@@ -24,6 +24,21 @@ import (
 	"github.com/csaf-poc/csaf_distribution/util"
 )
 
+const (
+	// interimsCSV is the name of the file to store the URLs
+	// of the interim advisories.
+	interimsCSV = "interims.csv"
+
+	// changesCSV is the name of the file to store the
+	// the paths to the advisories sorted in descending order
+	// of the release date along with the release date.
+	changesCSV = "changes.csv"
+
+	// indexTXT is the name of the file to store the
+	// the paths of the advisories.
+	indexTXT = "index.txt"
+)
+
 func (w *worker) writeInterims(label string, summaries []summary) error {
 
 	// Filter out the interims.
@@ -44,7 +59,7 @@ func (w *worker) writeInterims(label string, summaries []summary) error {
 			ss[j].summary.CurrentReleaseDate)
 	})
 
-	fname := filepath.Join(w.dir, label, "interim.csv")
+	fname := filepath.Join(w.dir, label, interimsCSV)
 	f, err := os.Create(fname)
 	if err != nil {
 		return err
@@ -85,7 +100,7 @@ func (w *worker) writeCSV(label string, summaries []summary) error {
 			ss[j].summary.CurrentReleaseDate)
 	})
 
-	fname := filepath.Join(w.dir, label, "changes.csv")
+	fname := filepath.Join(w.dir, label, changesCSV)
 	f, err := os.Create(fname)
 	if err != nil {
 		return err
@@ -121,7 +136,7 @@ func (w *worker) writeCSV(label string, summaries []summary) error {
 
 func (w *worker) writeIndex(label string, summaries []summary) error {
 
-	fname := filepath.Join(w.dir, label, "index.txt")
+	fname := filepath.Join(w.dir, label, indexTXT)
 	f, err := os.Create(fname)
 	if err != nil {
 		return err
diff --git a/cmd/csaf_aggregator/interim.go b/cmd/csaf_aggregator/interim.go
index d28c9bd..c01ca8a 100644
--- a/cmd/csaf_aggregator/interim.go
+++ b/cmd/csaf_aggregator/interim.go
@@ -176,9 +176,9 @@ func (w *worker) interimWork(wg *sync.WaitGroup, jobs <-chan *interimJob) {
 				label = strings.ToLower(label)
 				labelPath := filepath.Join(providerPath, label)
 
-				interimsCSV := filepath.Join(labelPath, "interims.csv")
+				interCSV := filepath.Join(labelPath, interimsCSV)
 				interims, err := readInterims(
-					interimsCSV, w.processor.cfg.InterimYears)
+					interCSV, w.processor.cfg.InterimYears)
 				if err != nil {
 					return err
 				}
@@ -200,8 +200,8 @@ func (w *worker) interimWork(wg *sync.WaitGroup, jobs <-chan *interimJob) {
 					if err != nil {
 						return err
 					}
-					interimsCSV := filepath.Join(dst, label, "interims.csv")
-					if err := writeInterims(interimsCSV, finalized); err != nil {
+					interCSV := filepath.Join(dst, label, interimsCSV)
+					if err := writeInterims(interCSV, finalized); err != nil {
 						return err
 					}
 				}