diff --git a/CHANGELOG.md b/CHANGELOG.md
index 59aa08a..6c42dd7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 The format of this change log follows the advice given at [Keep a CHANGELOG](http://keepachangelog.com).
 
 ## [Unreleased]
+### Added
+- Check for one (and only one) space before assignment operator @ `Squiz.WhiteSpace.OperatorSpacing`
 
 ## [v3.3.1] - 2023-01-19
 ### Fixed
diff --git a/moodle/Tests/MoodleStandardTest.php b/moodle/Tests/MoodleStandardTest.php
index e4d940a..b4ba78e 100644
--- a/moodle/Tests/MoodleStandardTest.php
+++ b/moodle/Tests/MoodleStandardTest.php
@@ -704,50 +704,49 @@ public function test_squiz_operator_spacing() {
         // - line => array of contents for message / source problem matching.
         // - line => string of contents for message / source problem matching (only 1).
         $this->set_errors(array(
-                               6 => 0,
-                               7 => 'Expected 1 space before',
-                               8 => 'Expected 1 space after',
-                               9 => array('Expected 1 space before', 'Expected 1 space after'),
-                               10 => 0,
-                               11 => 'Expected 1 space after "=>"; 3 found',
-                               12 => 0,
+                               7 => 0,
+                               8 => 'Expected 1 space before',
+                               9 => 'Expected 1 space after',
+                               10 => array('Expected 1 space before', 'Expected 1 space after'),
+                               11 => 'Expected 1 space before "=>"; 3 found',
+                               12 => 'Expected 1 space after "=>"; 3 found',
                                13 => 0,
-                               14 => 'Expected 1 space before',
-                               15 => 'Expected 1 space after',
-                               16 => array('Expected 1 space before', 'Expected 1 space after'),
-                               17 => 0,
-                               18 => 'Expected 1 space after "="; 2 found',
-                               19 => 0,
-                               20 => 0,
+                               14 => 0,
+                               15 => 'Expected 1 space before',
+                               16 => 'Expected 1 space after',
+                               17 => array('Expected 1 space before', 'Expected 1 space after'),
+                               18 => 0,
+                               19 => 'Expected 1 space after "="; 2 found',
+                               20 => 'Expected 1 space before "="; 2 found',
                                21 => 0,
-                               22 => 'Expected 1 space before',
-                               23 => 'Expected 1 space after',
-                               24 => array('Expected 1 space before', 'Expected 1 space after'),
-                               25 => 0,
-                               26 => 'Expected 1 space after "+"; 2 found',
-                               27 => 'Expected 1 space before "+"; 2 found',
-                               28 => 0,
-                               29 => 'Expected 1 space before',
-                               30 => 'Expected 1 space after',
-                               31 => array('Expected 1 space before', 'Expected 1 space after'),
-                               32 => 0,
-                               33 => 'Expected 1 space after "-"; 2 found',
-                               34 => 'Expected 1 space before "-"; 2 found',
-                               35 => 0,
-                               36 => 'Expected 1 space before',
-                               37 => 'Expected 1 space after',
-                               38 => array('Expected 1 space before', 'Expected 1 space after'),
-                               39 => 0,
-                               40 => 'Expected 1 space after "*"; 2 found',
-                               41 => 'Expected 1 space before "*"; 2 found',
-                               42 => 0,
-                               43 => 'Expected 1 space before',
-                               44 => 'Expected 1 space after',
-                               45 => array('Expected 1 space before', 'Expected 1 space after'),
-                               46 => 0,
-                               47 => 'Expected 1 space after "/"; 2 found',
-                               48 => 'Expected 1 space before "/"; 2 found',
-                               49 => 0,
+                               22 => 0,
+                               23 => 'Expected 1 space before',
+                               24 => 'Expected 1 space after',
+                               25 => array('Expected 1 space before', 'Expected 1 space after'),
+                               26 => 0,
+                               27 => 'Expected 1 space after "+"; 2 found',
+                               28 => 'Expected 1 space before "+"; 2 found',
+                               29 => 0,
+                               30 => 'Expected 1 space before',
+                               31 => 'Expected 1 space after',
+                               32 => array('Expected 1 space before', 'Expected 1 space after'),
+                               33 => 0,
+                               34 => 'Expected 1 space after "-"; 2 found',
+                               35 => 'Expected 1 space before "-"; 2 found',
+                               36 => 0,
+                               37 => 'Expected 1 space before',
+                               38 => 'Expected 1 space after',
+                               39 => array('Expected 1 space before', 'Expected 1 space after'),
+                               40 => 0,
+                               41 => 'Expected 1 space after "*"; 2 found',
+                               42 => 'Expected 1 space before "*"; 2 found',
+                               43 => 0,
+                               44 => 'Expected 1 space before',
+                               45 => 'Expected 1 space after',
+                               46 => array('Expected 1 space before', 'Expected 1 space after'),
+                               47 => 0,
+                               48 => 'Expected 1 space after "/"; 2 found',
+                               49 => 'Expected 1 space before "/"; 2 found',
                                50 => 0,
                                51 => 0,
                                52 => 0,
@@ -761,7 +760,8 @@ public function test_squiz_operator_spacing() {
                                60 => 0,
                                61 => 0,
                                62 => 0,
-                               63 => 0
+                               63 => 0,
+                               64 => 0
                           ));
         $this->set_warnings(array());
 
diff --git a/moodle/Tests/fixtures/squiz_whitespace_operatorspacing.php b/moodle/Tests/fixtures/squiz_whitespace_operatorspacing.php
index 50db622..0a0937e 100644
--- a/moodle/Tests/fixtures/squiz_whitespace_operatorspacing.php
+++ b/moodle/Tests/fixtures/squiz_whitespace_operatorspacing.php
@@ -1,4 +1,5 @@
 phpcs:set Squiz.WhiteSpace.OperatorSpacing ignoreNewlines true
+phpcs:set Squiz.WhiteSpace.OperatorSpacing ignoreSpacingBeforeAssignments false
 <?php
 defined('MOODLE_INTERNAL') || die(); // Make this always the 1st line in all CS fixtures.