diff --git a/src/CssLint/Referential/NonStandard/PropertiesReferential.php b/src/CssLint/Referential/NonStandard/PropertiesReferential.php
index 44f6d7a..ab38fcf 100644
--- a/src/CssLint/Referential/NonStandard/PropertiesReferential.php
+++ b/src/CssLint/Referential/NonStandard/PropertiesReferential.php
@@ -124,7 +124,6 @@ class PropertiesReferential extends AbstractReferential
         'box-shadow-spread' => true,
         'box-snap' => true,
         'caret' => true,
-        'caret-shape' => true,
         'column-height' => true,
         'column-rule-break' => true,
         'column-rule-outset' => true,
@@ -180,7 +179,7 @@ class PropertiesReferential extends AbstractReferential
         'item-direction' => true,
         'item-flow' => true,
         'item-pack' => true,
-        'item-slack' => true,
+        'item-tolerance' => true,
         'item-track' => true,
         'item-wrap' => true,
         'line-fit-edge' => true,
diff --git a/src/CssLint/Referential/Standard/PropertiesReferential.php b/src/CssLint/Referential/Standard/PropertiesReferential.php
index 30cc53b..b01849a 100644
--- a/src/CssLint/Referential/Standard/PropertiesReferential.php
+++ b/src/CssLint/Referential/Standard/PropertiesReferential.php
@@ -135,6 +135,7 @@ class PropertiesReferential extends AbstractReferential
         'caption-side' => true,
         'caret-animation' => true,
         'caret-color' => true,
+        'caret-shape' => true,
         'chains' => true,
         'clear' => true,
         'clip' => true,