diff --git a/internal/setup/setup_test.go b/internal/setup/setup_test.go
index 95a3d5b0..187001aa 100644
--- a/internal/setup/setup_test.go
+++ b/internal/setup/setup_test.go
@@ -223,6 +223,120 @@ var setupTests = []setupTest{{
 			EndOfLife: time.Date(2100, time.January, 1, 0, 0, 0, 0, time.UTC),
 		},
 	},
+}, {
+	summary: "Invalid pro in archives ignored",
+	input: map[string]string{
+		"chisel.yaml": `
+			format: v3
+			maintenance:
+				standard: 2001-02-03
+				end-of-life: 2010-11-12
+			archives:
+				ubuntu:
+					version: 20.04
+					suites: [focal]
+					components: [main]
+					public-keys: [test-key]
+					priority: 10
+				ubuntu-invalid:
+					pro: invalid-pro  # <- invalid pro should be ignored, not cause an error 
+					version: 20.04
+					components: [main]
+					suites: [focal]
+					public-keys: [test-key]
+					priority: 20
+			public-keys:
+				test-key:
+					id: ` + testKey.ID + `
+					armor: |` + "\n" + testutil.PrefixEachLine(testKey.PubKeyArmor, "\t\t\t\t\t\t") + `
+		`,
+		"slices/mydir/mypkg.yaml": `
+			package: mypkg
+		`,
+	},
+	release: &setup.Release{
+		Format: "v3",
+		Archives: map[string]*setup.Archive{
+			"ubuntu": {
+				Name:       "ubuntu",
+				Version:    "20.04",
+				Suites:     []string{"focal"},
+				Components: []string{"main"},
+				Priority:   10,
+				PubKeys:    []*packet.PublicKey{testKey.PubKey},
+				Maintained: false,
+				OldRelease: true,
+			},
+		},
+		Packages: map[string]*setup.Package{
+			"mypkg": {
+				Name:   "mypkg",
+				Path:   "slices/mydir/mypkg.yaml",
+				Slices: map[string]*setup.Slice{},
+			},
+		},
+		Maintenance: &setup.Maintenance{
+			Standard:  time.Date(2001, time.February, 3, 0, 0, 0, 0, time.UTC),
+			EndOfLife: time.Date(2010, time.November, 12, 0, 0, 0, 0, time.UTC),
+		},
+	},
+}, {
+	summary: "Invalid pro in archives ignored in v2-archives",
+	input: map[string]string{
+		"chisel.yaml": `
+			format: v1
+			maintenance:
+				standard: 2001-02-03
+				end-of-life: 2010-11-12
+			archives:
+				ubuntu:
+					version: 20.04
+					suites: [focal]
+					components: [main]
+					public-keys: [test-key]
+					default: true
+			v2-archives:
+				ubuntu-invalid:
+					pro: invalid-pro  # <- invalid pro should be ignored, not cause an error 
+					version: 20.04
+					components: [main]
+					suites: [focal]
+					public-keys: [test-key]
+			public-keys:
+				test-key:
+					id: ` + testKey.ID + `
+					armor: |` + "\n" + testutil.PrefixEachLine(testKey.PubKeyArmor, "\t\t\t\t\t\t") + `
+		`,
+		"slices/mydir/mypkg.yaml": `
+			package: mypkg
+		`,
+	},
+	release: &setup.Release{
+		Format: "v1",
+		Archives: map[string]*setup.Archive{
+			"ubuntu": {
+				Name:       "ubuntu",
+				Version:    "20.04",
+				Suites:     []string{"focal"},
+				Components: []string{"main"},
+				Priority:   1,
+				PubKeys:    []*packet.PublicKey{testKey.PubKey},
+				Maintained: false,
+				OldRelease: true,
+			},
+		},
+		Packages: map[string]*setup.Package{
+			"mypkg": {
+				Name:   "mypkg",
+				Path:   "slices/mydir/mypkg.yaml",
+				Slices: map[string]*setup.Slice{},
+			},
+		},
+		Maintenance: &setup.Maintenance{
+			Standard:  time.Date(2001, time.February, 3, 0, 0, 0, 0, time.UTC),
+			EndOfLife: time.Date(2010, time.November, 12, 0, 0, 0, 0, time.UTC),
+		},
+	},
 }, {
 	summary: "Cycles are detected within packages",
 	input: map[string]string{
diff --git a/internal/setup/yaml.go b/internal/setup/yaml.go
index b048bfc9..3c38d8ed 100644
--- a/internal/setup/yaml.go
+++ b/internal/setup/yaml.go
@@ -359,7 +359,7 @@ func parseRelease(baseDir, filePath string, data []byte) (*Release, error) {
 		// negative priorities to all but the default one, which means all
 		// others will be ignored unless pinned.
 		var archiveNames []string
-		for archiveName := range yamlArchives {
+		for archiveName := range release.Archives {
 			archiveNames = append(archiveNames, archiveName)
 		}
 		// Make it deterministic.