diff --git a/src/obidmscolumn.h b/src/obidmscolumn.h
index 5687cd6..f8863db 100644
--- a/src/obidmscolumn.h
+++ b/src/obidmscolumn.h
@@ -28,9 +28,9 @@
 #include "obiblob_indexer.h"
 
 
-#define ELEMENTS_NAMES_MAX (10240)     	  		/**< The maximum length of the list of elements names.	// TODO Discuss
+#define ELEMENTS_NAMES_MAX (20480)     	  		/**< The maximum length of the list of elements names.	// TODO Discuss
                                 	       	   	 */
-#define NB_ELTS_MAX_IF_DEFAULT_NAME (10240) 	/**< The maximum number of elements per line if the default element names
+#define NB_ELTS_MAX_IF_DEFAULT_NAME (20480) 	/**< The maximum number of elements per line if the default element names
 										   	   	 *   are used ("0\01\02\0...\0n"), considering ELEMENTS_NAMES_MAX.  // TODO not up to date
 										   	   	 */
 #define COLUMN_GROWTH_FACTOR (2)	 	  		/**< The growth factor when a column is enlarged.