diff --git a/scan.php b/scan.php
index eefe45c..a632755 100644
--- a/scan.php
+++ b/scan.php
@@ -176,10 +176,10 @@ class MalwareScanner
         if (isset($options['base64']) || isset($options['b'])){
             $this->flagBase64 = true;
         }
-        if (isset($options['checksum']) || isset($options['c'])){
+	if (isset($options['checksum']) || isset($options['m'])){
             $this->flagChecksum = true;
         }
-        if (isset($options['comment']) || isset($options['a'])){
+        if (isset($options['comment']) || isset($options['c'])){
             $this->flagComments = true;
         }
         if (isset($options['extra-check']) || isset($options['x'])) {
@@ -421,8 +421,8 @@ class MalwareScanner
         echo '    -e <file extension>  --extension        File Extension to Scan'                   . PHP_EOL;
         echo '    -i <directory|file>  --ignore           Directory of file to igonre'              . PHP_EOL;
         echo '    -b                   --base64           Scan for base64 encoded PHP keywords'     . PHP_EOL;	    
-        echo '    -c                   --checksum         Display MD5 Checksum of file'             . PHP_EOL;
-        echo '    -a                   --comment          Display comments for matched patterns'    . PHP_EOL;
+        echo '    -m                   --checksum         Display MD5 Checksum of file'             . PHP_EOL;
+        echo '    -c                   --comment          Display comments for matched patterns'    . PHP_EOL;
         echo '    -x                   --extra-check      Adds GoogleBot and htaccess to Scan List' . PHP_EOL;
         echo '    -l                   --follow-symlink   Follow symlinked directories'             . PHP_EOL;
         echo '    -k                   --hide-ok          Hide OK aka not infected messages'        . PHP_EOL;