diff --git a/reference/normalize_test.go b/reference/normalize_test.go
index 0932d06f4..f1b6f27ae 100644
--- a/reference/normalize_test.go
+++ b/reference/normalize_test.go
@@ -269,6 +269,7 @@ func TestParseRepositoryInfo(t *testing.T) {
 		}
 
 		for _, r := range refStrings {
+			r := r
 			t.Run(strconv.Itoa(i)+"/"+r, func(t *testing.T) {
 				t.Parallel()
 				named, err := ParseNormalizedNamed(r)
diff --git a/registry/api/errcode/errors_test.go b/registry/api/errcode/errors_test.go
index 6a7eb7d2a..105d9f7ce 100644
--- a/registry/api/errcode/errors_test.go
+++ b/registry/api/errcode/errors_test.go
@@ -39,9 +39,11 @@ func TestErrorCodes(t *testing.T) {
 		t.Fatal("errors aren't loaded!")
 	}
 
-	for ec, desc := range errorCodeToDescriptors {
+	for ec := range errorCodeToDescriptors {
+		ec := ec
 		t.Run(ec.String(), func(t *testing.T) {
 			t.Parallel()
+			desc := errorCodeToDescriptors[ec]
 			if ec != desc.Code {
 				t.Fatalf("error code in descriptor isn't correct, %q != %q", ec, desc.Code)
 			}