diff --git a/epsacrop.module b/epsacrop.module
index 5d901e4..569d30d 100644
--- a/epsacrop.module
+++ b/epsacrop.module
@@ -967,7 +967,11 @@ function _epsacrop_add_file($fid, $coords) {
 function _epsacrop_save_coords($fid, $coords) {
   // Check fid is for a valid file.
   if ($file = file_load($fid)) {
-
+    $info = image_get_info($file->uri);
+    // Not an image.
+    if (!$info) {
+      return FALSE;
+    }
     $coords_data = drupal_json_decode($coords);
 
     // We don't know the field so assume there is only one item in the array.
@@ -978,8 +982,8 @@ function _epsacrop_save_coords($fid, $coords) {
     if (!empty($field_coords) && (
         $field_coords['x'] < 0
         || $field_coords['y'] < 0
-        || $field_coords['x2'] > $file->width
-        || $field_coords['y2'] > $file->height
+        || $field_coords['x2'] > $info['width']
+        || $field_coords['y2'] > $info['height']
       )) {
       return FALSE;
     }