diff --git a/Utils/IO/Zip/Tar.php b/Utils/IO/Zip/Tar.php
index a6819221f..bd4f0c339 100644
--- a/Utils/IO/Zip/Tar.php
+++ b/Utils/IO/Zip/Tar.php
@@ -90,7 +90,7 @@ class Tar implements ArchiveInterface
      */
     public static function unpack(string $source, string $destination) : bool
     {
-        if (!\is_dir($source)) {
+        if (!\is_file($source)) {
             return false;
         }
 
diff --git a/Utils/IO/Zip/TarGz.php b/Utils/IO/Zip/TarGz.php
index c5ba4ffcf..9364afd58 100644
--- a/Utils/IO/Zip/TarGz.php
+++ b/Utils/IO/Zip/TarGz.php
@@ -57,7 +57,7 @@ class TarGz implements ArchiveInterface
     public static function unpack(string $source, string $destination) : bool
     {
         $destination = \str_replace('\\', '/', $destination);
-        if (!\is_dir($destination) || \is_file($source)) {
+        if (!\is_dir($destination) || !\is_file($source)) {
             return false;
         }