diff --git a/restful.module b/restful.module
index 2821e3ec..25cba3bb 100644
--- a/restful.module
+++ b/restful.module
@@ -527,6 +527,17 @@ function restful_menu_process_callback($resource_name, $version = NULL) {
     foreach ($e->getHeaders() as $header_name => $header_value) {
       drupal_add_http_header($header_name, $header_value);
     }
+
+    if ($e->getCode() < 500) {
+      // Even though it's an exception, it's in fact not a server error - it
+      // might be just access denied, or a bad request, so we just want to log
+      // it, but without marking it as an actual exception.
+      watchdog('restful', $e->getMessage());
+    }
+    else {
+      // This one should really be considered as an error.
+      watchdog_exception('restful', $e);
+    }
   }
   catch (Exception $e) {
     $result = array(
@@ -534,6 +545,8 @@ function restful_menu_process_callback($resource_name, $version = NULL) {
       'title' => $e->getMessage(),
       'status' => 500,
     );
+
+    watchdog_exception('restful', $e);
   }
 
   // Adhere to the API Problem draft proposal.