diff --git a/main.go b/main.go
index c4dc9e0..eb663d8 100644
--- a/main.go
+++ b/main.go
@@ -131,7 +131,7 @@ func main() {
 		for _, p := range oldProducts {
 			log.Debugf("found old product: %s", p.Name)
 			if trx = db.Unscoped().Delete(&p); trx.Error != nil {
-				log.Warnf("cannot remove stale product %: %s", p, trx.Error)
+				log.Warnf("cannot remove stale product %s (%s): %s", p.Name, p.URL, trx.Error)
 			}
 			log.Printf("stale product %s (%s) removed from database", p.Name, p.URL)
 		}
diff --git a/utils_test.go b/utils_test.go
new file mode 100644
index 0000000..d0e3642
--- /dev/null
+++ b/utils_test.go
@@ -0,0 +1,33 @@
+package main
+
+import (
+	"fmt"
+	"testing"
+)
+
+func TestExtractShopName(t *testing.T) {
+	tests := []struct {
+		link string // url to parse
+		name string // expected name
+	}{
+		{"https://www.topachat.com/pages/produits_cat_est_micro_puis_rubrique_est_wgfx_pcie_puis_f_est_58-11733,11575,11447,11445,11446,10587,11796,11559,11558,11586.html", "topachat.com"},
+		{"https://www.ldlc.com/informatique/pieces-informatique/carte-graphique-interne/c4684/+fv121-17715,19183,19184,19185,19339,19340,19365,19367,19509,19674.html", "ldlc.com"},
+		{"https://www.cybertek.fr/carte-graphique-6.aspx?crits=3991%3a4236%3a4387%3a4237%3a4242%3a4289%3a4229%3a4144%3a4145%3a4146", "cybertek.fr"},
+		{"https://www.mediamarkt.ch/fr/category/_cartes-graphiques-751073.html", "mediamarkt.ch"},
+		{"https://www.steg-electronics.ch/fr/product/pool/nvidia-3060", "steg-electronics.ch"},
+		{"https://www.vsgamers.es/category/componentes/tarjetas-graficas?filter-modelo=rtxr-3060-1307", "vsgamers.es"},
+	}
+
+	for i, tc := range tests {
+		t.Run(fmt.Sprintf("TestExtractShopName#%d", i), func(t *testing.T) {
+			name, err := ExtractShopName(tc.link)
+			if err != nil {
+				t.Errorf("for %s: got %s, want %s", tc.link, err, tc.name)
+			} else if name != tc.name {
+				t.Errorf("for %s: got %s, want %s", tc.link, name, tc.name)
+			} else {
+				t.Logf("for %s: got %s, want %s", tc.link, name, tc.name)
+			}
+		})
+	}
+}