diff --git a/src/Scanners/ImagickScanner.php b/src/Scanners/ImagickScanner.php
index d15dd04..d35b134 100644
--- a/src/Scanners/ImagickScanner.php
+++ b/src/Scanners/ImagickScanner.php
@@ -38,6 +38,13 @@ private function getImagick()
             $this->imagick->medianFilterImage(2);
             $this->imagick->setImageCompression(imagick::COMPRESSION_JPEG);
             $this->imagick->setImageCompressionQuality(100);
+            $this->imagick->quantizeImage(
+                2,                        // Number of colors
+                Imagick::COLORSPACE_GRAY, // Colorspace
+                1,                        // Depth tree
+                TRUE,                     // Dither
+                FALSE
+            );
             $this->imagick->blackThresholdImage("#FFFFFF");
             $this->imagick->whiteThresholdImage("#000000");
         }
@@ -279,4 +286,4 @@ protected function finish()
         $this->getImagick()->clear();
         $this->original->clear();
     }
-}
\ No newline at end of file
+}