diff --git a/src/obidms.c b/src/obidms.c
index 35ae74f..8bdfe58 100644
--- a/src/obidms.c
+++ b/src/obidms.c
@@ -13,6 +13,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
+#include <stdbool.h>
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <sys/types.h>
@@ -387,6 +388,8 @@ OBIDMS_p obi_open_dms(const char* dms_name)
 
 	close(infos_file_descriptor);
 
+	dms->little_endian = little_endian_dms;
+
 	// Open the arrays directory
 	dms->array_directory = private_opendirat(dms->dir_fd, ARRAYS_DIR_NAME);
 	if (dms->array_directory == NULL)
diff --git a/src/obidms.h b/src/obidms.h
index d990e79..2f4083c 100644
--- a/src/obidms.h
+++ b/src/obidms.h
@@ -20,6 +20,7 @@
 #include <dirent.h>
 #include <string.h>
 #include <stdio.h>
+#include <stdbool.h>
 
 #include "obierrno.h"
 
@@ -52,6 +53,8 @@ typedef struct OBIDMS {
 	int		array_dir_fd;						/**< The file descriptor of the directory entry
 												 *   usable to refer and scan the array directory.
 												 */
+	bool	little_endian;						/**< Endianness of the database.
+												 */
 } OBIDMS_t, *OBIDMS_p;