diff --git a/fig.gex-descriptors.tex b/fig.gex-descriptors.tex
index 9b86ad0..f046d7e 100644
--- a/fig.gex-descriptors.tex
+++ b/fig.gex-descriptors.tex
@@ -134,5 +134,5 @@ Device Descriptor:
 \end{verbatim}
 \end{minipage}\vspace{-1em}
 \begin{figure}[H]
-	\caption{\label{fig:gex-descriptors}USB descriptors of a GEX prototype obtained using ``\mono{lsusb}''}
+	\caption{\label{fig:gex_descriptors}USB descriptors of a GEX prototype obtained using ``\mono{lsusb}''}
 \end{figure}
diff --git a/thesis.pdf b/thesis.pdf
index 2ad3f76..fcb3797 100644
Binary files a/thesis.pdf and b/thesis.pdf differ
diff --git a/undash.php b/undash.php
index 2cd5927..f988f1e 100644
--- a/undash.php
+++ b/undash.php
@@ -1,25 +1,24 @@
 <?php
 
-if (count($argv)==1) die("no file\n");
+array_shift($argv);
 
-foreach($argv as $i => $value) {
-	if ($i == 0) continue;
-	if(!file_exists($value)) die("no file ".$value."\n");
+if (count($argv)==0) die("no file\n");
+
+foreach($argv as $value) {
+  if(!file_exists($value)) die("no file ".$value."\n");
 }
 
 
-foreach($argv as $i => $value) {
-	if ($i == 0) continue;
-	
-	echo "Cleaning $value\n";
-	
-	$content = file_get_contents($value);
-		
-	$pat = '/(\\\\(?:label|cref|Cref|ref))\\{([^}]+)\\}/';
-	$fixed = preg_replace_callback($pat, function($match) {
-		return $match[1] . '{' . trim(str_replace('-', '_', $match[2])) . '}';
-	}, $content);
-	
-	file_put_contents($value, $fixed);
+foreach($argv as $value) {  
+  echo "Cleaning $value\n";
+  
+  $content = file_get_contents($value);
+    
+  $pat = '/(\\\\(?:label|cref|Cref|ref))\\{([^}]+)\\}/';
+  $fixed = preg_replace_callback($pat, function($match) {
+    return $match[1] . '{' . trim(str_replace('-', '_', $match[2])) . '}';
+  }, $content);
+  
+  file_put_contents($value, $fixed);
 }
 echo "OK.\n";