diff --git a/tests/ConverterTest.php b/tests/ConverterTest.php
index cab4134d..6fdcc8a0 100644
--- a/tests/ConverterTest.php
+++ b/tests/ConverterTest.php
@@ -13,7 +13,6 @@
 use Money\Money;
 use PHPUnit\Framework\TestCase;
 
-use function setlocale;
 use function sprintf;
 
 use const LC_ALL;
@@ -21,6 +20,8 @@
 /** @covers \Money\Converter */
 final class ConverterTest extends TestCase
 {
+    use Locale;
+
     /**
      * @psalm-param non-empty-string $baseCurrencyCode
      * @psalm-param non-empty-string $counterCurrencyCode
@@ -193,17 +194,17 @@ public function itConvertsToADifferentCurrencyWhenDecimalSeparatorIsComma(
         $amount,
         $expectedAmount
     ): void {
-        setlocale(LC_ALL, 'ru_RU.UTF-8');
-
-        $this->itConvertsToADifferentCurrency(
-            $baseCurrencyCode,
-            $counterCurrencyCode,
-            $subunitBase,
-            $subunitCounter,
-            $ratio,
-            $amount,
-            $expectedAmount
-        );
+        self::runLocaleAware(LC_ALL, 'ru_RU.UTF-8', function () use ($expectedAmount, $amount, $ratio, $subunitCounter, $subunitBase, $counterCurrencyCode, $baseCurrencyCode): void {
+            $this->itConvertsToADifferentCurrency(
+                $baseCurrencyCode,
+                $counterCurrencyCode,
+                $subunitBase,
+                $subunitCounter,
+                $ratio,
+                $amount,
+                $expectedAmount
+            );
+        });
     }
 
     /**
diff --git a/tests/Locale.php b/tests/Locale.php
new file mode 100644
index 00000000..22c223d6
--- /dev/null
+++ b/tests/Locale.php
@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Money;
+
+use Closure;
+
+use function setlocale;
+
+trait Locale
+{
+    public static function runLocaleAware(int $category, string $locale, Closure $callback): void
+    {
+        $currentLocale = setlocale($category, 0);
+        try {
+            setlocale($category, $locale);
+            $callback();
+        } finally {
+            setlocale($category, $currentLocale);
+        }
+    }
+}
diff --git a/tests/MoneyTest.php b/tests/MoneyTest.php
index a80ad7d8..2f8783c9 100644
--- a/tests/MoneyTest.php
+++ b/tests/MoneyTest.php
@@ -10,7 +10,6 @@
 use PHPUnit\Framework\TestCase;
 
 use function json_encode;
-use function setlocale;
 
 use const LC_ALL;
 use const PHP_INT_MAX;
@@ -20,6 +19,7 @@ final class MoneyTest extends TestCase
 {
     use AggregateExamples;
     use RoundExamples;
+    use Locale;
 
     public const AMOUNT = 10;
 
@@ -100,13 +100,13 @@ public function itMultipliesTheAmount(int|string $multiplier, int $roundingMode,
      */
     public function itMultipliesTheAmountWithLocaleThatUsesCommaSeparator(): void
     {
-        setlocale(LC_ALL, 'es_ES.utf8');
+        self::runLocaleAware(LC_ALL, 'es_ES.utf8', static function (): void {
+            $money = new Money(100, new Currency(self::CURRENCY));
+            $money = $money->multiply('0.1');
 
-        $money = new Money(100, new Currency(self::CURRENCY));
-        $money = $money->multiply('0.1');
-
-        self::assertInstanceOf(Money::class, $money);
-        self::assertEquals('10', $money->getAmount());
+            self::assertInstanceOf(Money::class, $money);
+            self::assertEquals('10', $money->getAmount());
+        });
     }
 
     /**