diff --git a/framework/CHANGELOG.md b/framework/CHANGELOG.md
index bf8a8abf99..023622e0e6 100644
--- a/framework/CHANGELOG.md
+++ b/framework/CHANGELOG.md
@@ -4,6 +4,7 @@ Yii Framework 2 Change Log
 2.0.35 under development
 ------------------------
 
+- Bug #17961: Fix pagination `pageSizeLimit` ignore if set as array with more then 2 elements (tsvetiligo)
 - Bug #18011: Added attribute labels support for `DynamicModel`, fixed `EachValidator` to pass the attribute label to the underlying `DynamicModel` (storch)
 - Enh #18019: Allow jQuery 3.5.0 to be installed (wouter90)
 - Bug #17653: Fix `TypeError: pair[1] is undefined` when query param doesn't have = sign (baso10)
diff --git a/framework/data/Pagination.php b/framework/data/Pagination.php
index c8c12d0349..5006d9ea0b 100644
--- a/framework/data/Pagination.php
+++ b/framework/data/Pagination.php
@@ -213,7 +213,7 @@ class Pagination extends BaseObject implements Linkable
     public function getPageSize()
     {
         if ($this->_pageSize === null) {
-            if (empty($this->pageSizeLimit)) {
+            if (empty($this->pageSizeLimit) || !isset($this->pageSizeLimit[0], $this->pageSizeLimit[1])) {
                 $pageSize = $this->defaultPageSize;
                 $this->setPageSize($pageSize);
             } else {
@@ -235,7 +235,7 @@ class Pagination extends BaseObject implements Linkable
             $this->_pageSize = null;
         } else {
             $value = (int) $value;
-            if ($validatePageSize && isset($this->pageSizeLimit[0], $this->pageSizeLimit[1]) && count($this->pageSizeLimit) === 2) {
+            if ($validatePageSize && isset($this->pageSizeLimit[0], $this->pageSizeLimit[1])) {
                 if ($value < $this->pageSizeLimit[0]) {
                     $value = $this->pageSizeLimit[0];
                 } elseif ($value > $this->pageSizeLimit[1]) {