diff --git a/openpgp/read_test.go b/openpgp/read_test.go
index 318d927e..1233f591 100644
--- a/openpgp/read_test.go
+++ b/openpgp/read_test.go
@@ -11,6 +11,7 @@ import (
 	"encoding/hex"
 	"io"
 	"io/ioutil"
+	"math/bits"
 	"os"
 	"strings"
 	"testing"
@@ -634,18 +635,30 @@ func TestReadV6Messages(t *testing.T) {
 		t.Errorf("inline message is wrong: %s", contents)
 	}
 }
-
 func TestSymmetricDecryptionArgon2(t *testing.T) {
 	// Appendix IETF OpenPGP crypto refresh draft v08 A.8.1
 	passphrase := []byte("password")
-	file, err := os.Open("test_data/argon2-sym-message.asc")
-	if err != nil {
-		t.Fatal(err)
-	}
-	armoredEncryptedMessage, err := io.ReadAll(file)
-	if err != nil {
-		t.Fatal(err)
+	var armoredEncryptedMessage []byte
+	if bits.UintSize == 32 {
+		// Alternative for 32-bit platforms (cannot allocate 2GiB of RAM)
+		armoredEncryptedMessage = []byte(`-----BEGIN PGP MESSAGE-----
+
+w0gGJgcCFATa3KMW/4/9RsPME+un+MBqAwQQljCpv3dPfmVTFJAcqn+YRcIFrbY4
+iiVOkxM5uAKScyYn/T2su2j2fu+uPl/HpgLSWQIHAgx/1caHYWvwl7tyjJ/tSYwK
+m8OMKQHidSWi7UM88mN17ltnLCV/Wa3bLDIyAgJr9XKubHXeUK6/FqmtPxepd4y/
+SXkqZq0XEafMIbynK2gH6JHjctFX
+-----END PGP MESSAGE-----`)
+	} else {
+		file, err := os.Open("test_data/argon2-sym-message.asc")
+		if err != nil {
+			t.Fatal(err)
+		}
+		armoredEncryptedMessage, err = io.ReadAll(file)
+		if err != nil {
+			t.Fatal(err)
+		}
 	}
+
 	// Unarmor string
 	raw, err := armor.Decode(strings.NewReader(string(armoredEncryptedMessage)))
 	if err != nil {
diff --git a/openpgp/v2/read_test.go b/openpgp/v2/read_test.go
index 2feaf392..31cb68f2 100644
--- a/openpgp/v2/read_test.go
+++ b/openpgp/v2/read_test.go
@@ -11,6 +11,7 @@ import (
 	"encoding/hex"
 	"io"
 	"io/ioutil"
+	"math/bits"
 	"os"
 	"strings"
 	"testing"
@@ -669,14 +670,27 @@ func TestReadV6Messages(t *testing.T) {
 func TestSymmetricDecryptionArgon2(t *testing.T) {
 	// Appendix IETF OpenPGP crypto refresh draft v08 A.8.1
 	passphrase := []byte("password")
-	file, err := os.Open("../test_data/argon2-sym-message.asc")
-	if err != nil {
-		t.Fatal(err)
-	}
-	armoredEncryptedMessage, err := io.ReadAll(file)
-	if err != nil {
-		t.Fatal(err)
+	var armoredEncryptedMessage []byte
+	if bits.UintSize == 32 {
+		// Alternative for 32-bit platforms (cannot allocate 2GiB of RAM)
+		armoredEncryptedMessage = []byte(`-----BEGIN PGP MESSAGE-----
+
+w0gGJgcCFATa3KMW/4/9RsPME+un+MBqAwQQljCpv3dPfmVTFJAcqn+YRcIFrbY4
+iiVOkxM5uAKScyYn/T2su2j2fu+uPl/HpgLSWQIHAgx/1caHYWvwl7tyjJ/tSYwK
+m8OMKQHidSWi7UM88mN17ltnLCV/Wa3bLDIyAgJr9XKubHXeUK6/FqmtPxepd4y/
+SXkqZq0XEafMIbynK2gH6JHjctFX
+-----END PGP MESSAGE-----`)
+	} else {
+		file, err := os.Open("../test_data/argon2-sym-message.asc")
+		if err != nil {
+			t.Fatal(err)
+		}
+		armoredEncryptedMessage, err = io.ReadAll(file)
+		if err != nil {
+			t.Fatal(err)
+		}
 	}
+
 	// Unarmor string
 	raw, err := armor.Decode(strings.NewReader(string(armoredEncryptedMessage)))
 	if err != nil {