diff --git a/htdocs/core/class/extrafields.class.php b/htdocs/core/class/extrafields.class.php
index cf439f210be..0938da39dcd 100644
--- a/htdocs/core/class/extrafields.class.php
+++ b/htdocs/core/class/extrafields.class.php
@@ -2150,7 +2150,7 @@ class ExtraFields
 
 				if (in_array($key_type, array('date', 'datetime')))
 				{
-					if (! GETPOSTISSET($keysuffix."options_".$key.$keyprefix)."year") continue;	// Value was not provided, we should not set it.
+					if (! GETPOSTISSET($keysuffix."options_".$key.$keyprefix."year")) continue;	// Value was not provided, we should not set it.
 					// Clean parameters
 					$value_key = dol_mktime(GETPOST($keysuffix."options_".$key.$keyprefix."hour", 'int'), GETPOST($keysuffix."options_".$key.$keyprefix."min", 'int'), 0, GETPOST($keysuffix."options_".$key.$keyprefix."month", 'int'), GETPOST($keysuffix."options_".$key.$keyprefix."day", 'int'), GETPOST($keysuffix."options_".$key.$keyprefix."year", 'int'));
 				}