diff --git a/boards/forms/__init__.py b/boards/forms/__init__.py
--- a/boards/forms/__init__.py
+++ b/boards/forms/__init__.py
@@ -298,11 +298,11 @@ class PostForm(NeboardForm):
         max_file_count = board_settings.get_int(SECTION_FORMS, 'MaxFileCount')
         if len(inputs) > max_file_count:
             raise forms.ValidationError(ERROR_MANY_FILES)
-        for input in inputs:
-            if isinstance(input, UploadedFile):
-                files.append(self._clean_file_file(input))
+        for file_input in inputs:
+            if isinstance(file_input, UploadedFile):
+                files.append(self._clean_file_file(file_input))
             else:
-                files.append(self._clean_file_url(input))
+                files.append(self._clean_file_url(file_input))
 
         return files
 
diff --git a/boards/forms/fields.py b/boards/forms/fields.py
--- a/boards/forms/fields.py
+++ b/boards/forms/fields.py
@@ -82,9 +82,9 @@ class UrlFileField(forms.MultiValueField
         for data in data_list:
             if type(data) == list:
                 all_data += data
-            elif type(data) == str:
-                input = data.replace('\r\n', '\n')
-                url_list = input.split('\n')
+            elif type(data) == str and len(data) > 0:
+                file_input = data.replace('\r\n', '\n')
+                url_list = file_input.split('\n')
                 all_data += url_list
 
         return all_data