diff --git a/.php-cs-fixer.php b/.php-cs-fixer.php
index c3be35e958..542a8c71bd 100644
--- a/.php-cs-fixer.php
+++ b/.php-cs-fixer.php
@@ -48,6 +48,7 @@
         'strict_param' => true,
         'switch_case_space' => true,
         'trim_array_spaces' => true,
+        'unary_operator_spaces' => true,
         'visibility_required' => true,
         'void_return' => true,
         'whitespace_after_comma_in_array' => true,
diff --git a/include/email-validation.inc b/include/email-validation.inc
index 4a8b6b98d4..a4045127b2 100644
--- a/include/email-validation.inc
+++ b/include/email-validation.inc
@@ -12,7 +12,7 @@ function is_emailable_address($email)
 {
     $email = filter_var($email, FILTER_VALIDATE_EMAIL);
     // No email, no validation
-    if (! $email) {
+    if (!$email) {
         return false;
     }