diff --git a/src/PriceFormatter.php b/src/PriceFormatter.php
index 2bff95b..24027ab 100644
--- a/src/PriceFormatter.php
+++ b/src/PriceFormatter.php
@@ -33,7 +33,7 @@ class PriceFormatter
         $formatted = ltrim($formatted, $currency->prefix());
         $formatted = rtrim($formatted, $currency->suffix());
 
-        $removeNonDigits = preg_replace('/[^\d'.preg_quote($currency->decimalSeparator()).']/', '', $formatted);
+        $removeNonDigits = preg_replace('/[^\d' . preg_quote($currency->decimalSeparator()) . ']/', '', $formatted);
 
         if (!is_string($removeNonDigits)) {
             throw new \Exception('The formatted string could not be resolved to a valid number.');