diff --git a/phpBB/includes/ucp/ucp_profile.php b/phpBB/includes/ucp/ucp_profile.php
index c48df2c34d..64c49e17ac 100644
--- a/phpBB/includes/ucp/ucp_profile.php
+++ b/phpBB/includes/ucp/ucp_profile.php
@@ -470,6 +470,8 @@ class ucp_profile
 				include($phpbb_root_path . 'includes/functions_posting.' . $phpEx);
 				include($phpbb_root_path . 'includes/functions_display.' . $phpEx);
 
+				$preview	= $request->is_set_post('preview');
+
 				$enable_bbcode	= ($config['allow_sig_bbcode']) ? $user->optionget('sig_bbcode') : false;
 				$enable_smilies	= ($config['allow_sig_smilies']) ? $user->optionget('sig_smilies') : false;
 				$enable_urls	= ($config['allow_sig_links']) ? $user->optionget('sig_links') : false;
@@ -478,7 +480,7 @@ class ucp_profile
 				$signature			= $request->variable('signature', $decoded_message['text'], true);
 				$signature_preview	= '';
 
-				if ($submit || $request->is_set_post('preview'))
+				if ($submit || $preview)
 				{
 					$enable_bbcode	= ($config['allow_sig_bbcode']) ? !$request->variable('disable_bbcode', false) : false;
 					$enable_smilies	= ($config['allow_sig_smilies']) ? !$request->variable('disable_smilies', false) : false;