diff --git a/src/WebinoImageThumb/PhpThumb/Plugin/Sharpen.php b/src/WebinoImageThumb/PhpThumb/Plugin/Sharpen.php
index <HASH>..<HASH> 100644
--- a/src/WebinoImageThumb/PhpThumb/Plugin/Sharpen.php
+++ b/src/WebinoImageThumb/PhpThumb/Plugin/Sharpen.php
@@ -2,7 +2,7 @@
 
 namespace WebinoImageThumb\PhpThumb\Plugin;
 
-use PHPThumb\PHPThumb;
+use PHPThumb\GD as PHPThumb;
 
 class Sharpen implements \PHPThumb\PluginInterface
 {
@@ -34,4 +34,4 @@ class Sharpen implements \PHPThumb\PluginInterface
 
         return $phpthumb;
     }
-}
+}
\ No newline at end of file
diff --git a/src/WebinoImageThumb/WebinoImageThumb.php b/src/WebinoImageThumb/WebinoImageThumb.php
index <HASH>..<HASH> 100644
--- a/src/WebinoImageThumb/WebinoImageThumb.php
+++ b/src/WebinoImageThumb/WebinoImageThumb.php
@@ -80,4 +80,4 @@ class WebinoImageThumb
     {
         return new ExtraPlugins\Sharpen($offset, $matrix);
     }
-}
+}
\ No newline at end of file
- The method getOldImage() does not seem to exist on object<PHPThumb\PHPThumb> (solved);