diff --git a/SOPE/GDLContentStore/GCSSpecialQueries.m b/SOPE/GDLContentStore/GCSSpecialQueries.m
index d3c916864..e99afbaf5 100644
--- a/SOPE/GDLContentStore/GCSSpecialQueries.m
+++ b/SOPE/GDLContentStore/GCSSpecialQueries.m
@@ -181,7 +181,7 @@
 {
   static NSString *sqlFolderFormat
     = (@"CREATE TABLE %@ ("
-       @" c_id VARCHAR(255) NOT NULL PRIMARY KEY,"
+       @" c_id VARCHAR(255) PRIMARY KEY,"
        @" c_value VARCHAR(255) NOT NULL,"
        @" c_creationdate INT4 NOT NULL,"
        @" c_lastseen INT4 NOT NULL)");