diff --git a/src/Copper/Copper.php b/src/Copper/Copper.php
index cbc26f8..cda9cb1 100755
--- a/src/Copper/Copper.php
+++ b/src/Copper/Copper.php
@@ -89,12 +89,12 @@ public static function create(float|string|null $value = null, ?int $style = nul
      */
     public static function decimal(?int $precision = null): string|bool
     {
-        if (false === is_null($precision)) {
-            self::$formatter->setAttribute(NumberFormatter::FRACTION_DIGITS, $precision);
-        }
         if (NumberFormatter::DECIMAL !== self::$style) {
             self::setStyle(NumberFormatter::DECIMAL);
         }
+        if (false === is_null($precision)) {
+            self::$formatter->setAttribute(NumberFormatter::FRACTION_DIGITS, $precision);
+        }
 
         return self::$formatter->format(self::$value);
     }
@@ -184,12 +184,12 @@ public static function scientific(): string|bool
      */
     public static function unit(Unit $unit, bool $usePrefix = true, bool $useThrees = true, ?int $precision = null): string
     {
-        if (false === is_null($precision)) {
-            self::$formatter->setAttribute(NumberFormatter::FRACTION_DIGITS, $precision);
-        }
         if (NumberFormatter::DECIMAL !== self::$style) {
             self::setStyle(NumberFormatter::DECIMAL);
         }
+        if (false === is_null($precision)) {
+            self::$formatter->setAttribute(NumberFormatter::FRACTION_DIGITS, $precision);
+        }
 
         $value = self::$value;
         $exponent = 0;
diff --git a/tests/Unit/CopperTest.php b/tests/Unit/CopperTest.php
index cc3bbc5..c460a47 100644
--- a/tests/Unit/CopperTest.php
+++ b/tests/Unit/CopperTest.php
@@ -26,7 +26,8 @@
 });
 
 it('formats a number as decimal', function () {
-    Copper::create(1234.56, locale: 'en-GB');
+    Copper::create(1234.563, locale: 'en-GB');
+    Copper::setStyle(2);
     $result = Copper::decimal(2);
     expect($result)->toBe('1,234.56');
 });
@@ -63,6 +64,7 @@
 
 it('formats a number with SI units and prefixes', function (float $value, string $output) {
     Copper::create($value);
+    Copper::setStyle(2);
     $result = Copper::unit(Unit::METRE);
     expect($result)->toBe($output);
 })->with([
@@ -87,6 +89,7 @@
 
 it('formats a number with SI units and prefixes with specific precision', function () {
     Copper::create(123456);
+    Copper::setStyle(2);
     $result = Copper::unit(Unit::METRE, precision: 2);
     expect($result)->toBe('0.12 Mm');
 });