diff --git a/htdocs/langs/en_US/modulebuilder.lang b/htdocs/langs/en_US/modulebuilder.lang
index df0a834e04f..c32e0dce7f8 100644
--- a/htdocs/langs/en_US/modulebuilder.lang
+++ b/htdocs/langs/en_US/modulebuilder.lang
@@ -52,7 +52,7 @@ LanguageFile=File for language
 ObjectProperties=Object Properties
 ConfirmDeleteProperty=Are you sure you want to delete the property <strong>%s</strong>? This will change code in PHP class but also remove column from table definition of object.
 NotNull=Not NULL
-NotNullDesc=1=Set database to NOT NULL. -1=Allow null values and force value to NULL if empty ('' or 0).
+NotNullDesc=1=Set database to NOT NULL, 0=Allow null values, -1=Allow null values by forcing value to NULL if empty ('' or 0)
 SearchAll=Used for 'search all'
 DatabaseIndex=Database index
 FileAlreadyExists=File %s already exists