diff --git a/lib/Elastica/Aggregation/AbstractAggregation.php b/lib/Elastica/Aggregation/AbstractAggregation.php
index 5d9c43a467..c80fc589ad 100644
--- a/lib/Elastica/Aggregation/AbstractAggregation.php
+++ b/lib/Elastica/Aggregation/AbstractAggregation.php
@@ -132,7 +132,7 @@ public function toArray(): array
             // compensate for class name GlobalAggregation
             $array = ['global' => new \stdClass()];
         }
-        if (\sizeof($this->_aggs)) {
+        if (\count($this->_aggs)) {
             $array['aggs'] = $this->_convertArrayable($this->_aggs);
         }
 
diff --git a/lib/Elastica/ResultSet.php b/lib/Elastica/ResultSet.php
index af66de11e4..c67ed4edcb 100644
--- a/lib/Elastica/ResultSet.php
+++ b/lib/Elastica/ResultSet.php
@@ -241,7 +241,7 @@ public function count()
      */
     public function countSuggests()
     {
-        return \sizeof($this->getSuggests());
+        return \count($this->getSuggests());
     }
 
     /**