diff --git a/phpseclib/Math/BigInteger/Engines/PHP.php b/phpseclib/Math/BigInteger/Engines/PHP.php
index 39c8ac8f..562be40e 100644
--- a/phpseclib/Math/BigInteger/Engines/PHP.php
+++ b/phpseclib/Math/BigInteger/Engines/PHP.php
@@ -630,7 +630,7 @@ abstract class PHP extends Engine
             $temp_value = [$quotient_value[$q_index]];
             $temp = $temp->multiply($y);
             $temp_value = &$temp->value;
-            if ($temp_value !== []) {
+            if (!count($temp_value)) {
                 $temp_value = array_merge($adjust, $temp_value);
             }