diff --git a/base/DatabaseInstaller.php b/base/DatabaseInstaller.php
index c992d69..10b6c4d 100644
--- a/base/DatabaseInstaller.php
+++ b/base/DatabaseInstaller.php
@@ -61,8 +61,8 @@ public function installDatabase(): bool {
 
     $cat = 'cat';
     if ($this->options->dumpIsCompressed) {
-      $cat = trim(shell_exec('which gzcat'));
-      if ($cat === null) {
+      $cat = trim(shell_exec('which gzcat 2>/dev/null'));
+      if (!$cat) {
         $cat = 'zcat';
       }
     }