diff --git a/src/Configuration/Defaults/CommonAdditionalRules.php b/src/Configuration/Defaults/CommonAdditionalRules.php
index f916892..69f9298 100644
--- a/src/Configuration/Defaults/CommonAdditionalRules.php
+++ b/src/Configuration/Defaults/CommonAdditionalRules.php
@@ -8,6 +8,7 @@
 use Blumilk\Codestyle\Fixers\BinaryOperatorSpacesFixer;
 use Blumilk\Codestyle\Fixers\DoubleQuoteFixer;
 use Blumilk\Codestyle\Fixers\NoSpacesAfterFunctionNameFixer;
+use PHP_CodeSniffer\Standards\PSR12\Sniffs\Operators\OperatorSpacingSniff;
 use PhpCsFixer\Fixer\CastNotation\CastSpacesFixer;
 use PhpCsFixer\Fixer\ControlStructure\TrailingCommaInMultilineFixer;
 use PhpCsFixer\Fixer\FunctionNotation\UseArrowFunctionsFixer;
@@ -44,6 +45,7 @@ class CommonAdditionalRules extends Rules implements AdditionalRules
             ],
         ],
         NoExtraBlankLinesFixer::class => null,
+        OperatorSpacingSniff::class => null,
         TrailingCommaInMultilineFixer::class => [
             "elements" => [
                 "arrays",
diff --git a/tests/codestyle/fixtures/operatorSpacing/actual.php b/tests/codestyle/fixtures/operatorSpacing/actual.php
new file mode 100644
index 0000000..629050a
--- /dev/null
+++ b/tests/codestyle/fixtures/operatorSpacing/actual.php
@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+$a=1+2;
+
+$b=$a===3;
+
+$c=$a<5;
+
+$d=!$c;
diff --git a/tests/codestyle/fixtures/operatorSpacing/expected.php b/tests/codestyle/fixtures/operatorSpacing/expected.php
new file mode 100644
index 0000000..69d093c
--- /dev/null
+++ b/tests/codestyle/fixtures/operatorSpacing/expected.php
@@ -0,0 +1,11 @@
+<?php
+
+declare(strict_types=1);
+
+$a = 1 + 2;
+
+$b = $a === 3;
+
+$c = $a < 5;
+
+$d = !$c;
diff --git a/tests/unit/AdditionalRulesConfigurationTest.php b/tests/unit/AdditionalRulesConfigurationTest.php
index 1498422..ec2b582 100644
--- a/tests/unit/AdditionalRulesConfigurationTest.php
+++ b/tests/unit/AdditionalRulesConfigurationTest.php
@@ -8,6 +8,7 @@
 use Blumilk\Codestyle\Fixers\BinaryOperatorSpacesFixer;
 use Blumilk\Codestyle\Fixers\DoubleQuoteFixer;
 use Blumilk\Codestyle\Fixers\NoSpacesAfterFunctionNameFixer;
+use PHP_CodeSniffer\Standards\PSR12\Sniffs\Operators\OperatorSpacingSniff;
 use PhpCsFixer\Fixer\Alias\NoMixedEchoPrintFixer;
 use PhpCsFixer\Fixer\CastNotation\CastSpacesFixer;
 use PhpCsFixer\Fixer\ControlStructure\TrailingCommaInMultilineFixer;
@@ -53,6 +54,7 @@ public function testAdditionalRulesConfiguration(): void
                     ],
                 ],
                 NoExtraBlankLinesFixer::class => null,
+                OperatorSpacingSniff::class => null,
                 TrailingCommaInMultilineFixer::class => [
                     "elements" => [
                         "arrays",
@@ -99,6 +101,7 @@ public function testFilteringAdditionalRulesConfiguration(): void
                     ],
                 ],
                 NoExtraBlankLinesFixer::class => null,
+                OperatorSpacingSniff::class => null,
                 TrailingCommaInMultilineFixer::class => [
                     "elements" => [
                         "arrays",
@@ -142,6 +145,7 @@ public function testExtendingAdditionalRulesConfiguration(): void
                     ],
                 ],
                 NoExtraBlankLinesFixer::class => null,
+                OperatorSpacingSniff::class => null,
                 TrailingCommaInMultilineFixer::class => [
                     "elements" => [
                         "arrays",
@@ -193,6 +197,7 @@ public function testExtendingWithOptionsAdditionalRulesConfiguration(): void
                     ],
                 ],
                 NoExtraBlankLinesFixer::class => null,
+                OperatorSpacingSniff::class => null,
                 TrailingCommaInMultilineFixer::class => [
                     "elements" => [
                         "arrays",