diff --git a/inc/config.php b/inc/config.php
index bd5c5db3..016b7f77 100644
--- a/inc/config.php
+++ b/inc/config.php
@@ -780,6 +780,9 @@
 	// Set this to true if you're using a BSD
 	$config['bsd_md5'] = false;
 
+	// Set this to true if you're having problems with image duplicated error and bsd_md5 doesn't help.
+	$config['php_md5'] = false;
+
 	// Number of posts in a "View Last X Posts" page
 	$config['noko50_count'] = 50;
 	// Number of posts a thread needs before it gets a "View Last X Posts" page.
diff --git a/post.php b/post.php
index 223ddd45..21929bfa 100644
--- a/post.php
+++ b/post.php
@@ -568,7 +568,7 @@ if (isset($_POST['delete'])) {
 		
 		$md5cmd = $config['bsd_md5'] ? 'md5 -r' : 'md5sum';
 
-		if ($output = shell_exec_error("cat $filenames | $md5cmd")) {
+		if (!$config['php_md5'] && $output = shell_exec_error("cat $filenames | $md5cmd")) {
 			$explodedvar = explode(' ', $output);
 			$hash = $explodedvar[0];
 			$post['filehash'] = $hash;