diff --git a/print.pages.inc b/print.pages.inc
index 1ab082c0694f4eaabdbc9a91c3c8bef0334aea77..c54a34ef59217fe8d40f9e567559b2de39967095 100644
--- a/print.pages.inc
+++ b/print.pages.inc
@@ -30,14 +30,14 @@ function print_controller_html() {
     drupal_send_headers();
     print $html;
 
-    $nodepath = (isset($node->path)) ? drupal_get_normal_path($node->path) : 'node/' . $path;
+    $nodepath = (isset($node->path) && is_string($node->path)) ? drupal_get_normal_path($node->path) : 'node/' . $path;
     db_merge('print_page_counter')
       ->key(array('path' => $nodepath))
       ->fields(array(
           'totalcount' => 1,
           'timestamp' => REQUEST_TIME,
       ))
-      ->expression('totalcount', 'totalcount + :inc', array(':inc' => 1))
+      ->expression('totalcount', 'totalcount + 1')
       ->execute();
   }
 }
@@ -81,7 +81,7 @@ function print_controller($path, $cid = NULL, $format = PRINT_HTML_FORMAT, $teas
     $path = $alias;
   }
   $parts = explode('/', $path);
-  if ($parts[0] == 'node') {
+  if (($parts[0] == 'node') && (count($parts) > 1)) {
     array_shift($parts);
     $path = implode('/', $parts);
   }
diff --git a/print_mail/print_mail.inc b/print_mail/print_mail.inc
index c728b76acd1df9b808ac43572bef3944d4f18116..6bb612e64fa02fd4ed43eaffdbd9da7372ea0491 100644
--- a/print_mail/print_mail.inc
+++ b/print_mail/print_mail.inc
@@ -62,7 +62,7 @@ function print_mail_form($form, &$form_state) {
           'totalcount' => 1,
           'timestamp' => REQUEST_TIME,
       ))
-      ->expression('totalcount', 'totalcount + :inc', array(':inc' => 1))
+      ->expression('totalcount', 'totalcount + 1')
       ->execute();
   }
 
diff --git a/print_pdf/print_pdf.pages.inc b/print_pdf/print_pdf.pages.inc
index b07f5c61469f26ed28dcb74bbbc46c7df8ef9642..6f78f5ca25c98c22125256351d4dc2077d260622 100644
--- a/print_pdf/print_pdf.pages.inc
+++ b/print_pdf/print_pdf.pages.inc
@@ -54,14 +54,14 @@ function print_pdf_controller() {
     exit;
   }
 
-  $nodepath = (isset($node->path)) ? drupal_get_normal_path($node->path) : 'node/' . $path;
+  $nodepath = (isset($node->path) && is_string($node->path)) ? drupal_get_normal_path($node->path) : 'node/' . $path;
   db_merge('print_pdf_page_counter')
     ->key(array('path' => $nodepath))
     ->fields(array(
         'totalcount' => 1,
         'timestamp' => REQUEST_TIME,
     ))
-    ->expression('totalcount', 'totalcount + :inc', array(':inc' => 1))
+    ->expression('totalcount', 'totalcount + 1')
     ->execute();
 }