diff --git a/changelog/fix-maintain-test-drive-backward-compatibility-with-8-1-0 b/changelog/fix-maintain-test-drive-backward-compatibility-with-8-1-0
new file mode 100644
index 00000000000..c22fd037a46
--- /dev/null
+++ b/changelog/fix-maintain-test-drive-backward-compatibility-with-8-1-0
@@ -0,0 +1,5 @@
+Significance: patch
+Type: fix
+Comment: Maintain test-drive backward compatibility with version 8.1.0.
+
+
diff --git a/includes/class-wc-payments-onboarding-service.php b/includes/class-wc-payments-onboarding-service.php
index aa4f19864d6..56bb49f6607 100644
--- a/includes/class-wc-payments-onboarding-service.php
+++ b/includes/class-wc-payments-onboarding-service.php
@@ -256,10 +256,11 @@ public static function set_test_mode( bool $test_mode ): void {
 	/**
 	 * Determine if test mode onboarding is enabled.
 	 *
-	 * @return bool
+	 * @return bool Whether test mode onboarding is enabled or not.
 	 */
 	public static function is_test_mode_enabled(): bool {
-		return 'yes' === get_option( self::TEST_MODE_OPTION, 'no' );
+		// We support the `1` option value also for backward compatibility with version 8.1.0.
+		return in_array( get_option( self::TEST_MODE_OPTION, 'no' ), [ 'yes', '1' ], true );
 	}
 
 	/**