diff --git a/src/obidmscolumn.c b/src/obidmscolumn.c
index 2073b14..8922df6 100644
--- a/src/obidmscolumn.c
+++ b/src/obidmscolumn.c
@@ -26,7 +26,7 @@
 #include "obierrno.h"
 #include "obidebug.h"
 #include "obilittlebigman.h"
-#include "private_at_functions.h"
+
 
 /**************************************************************************
  *
@@ -188,7 +188,7 @@ static obiversion_t obi_get_new_version_number(OBIDMS_column_directory_p column_
 	}
 
 	// Open the version file
-	version_file_descriptor = private_openat(column_dir_file_descriptor, version_file_name, O_RDWR);
+	version_file_descriptor = openat(column_dir_file_descriptor, version_file_name, O_RDWR);
 	if (version_file_descriptor < 0)
 	{
 		free(version_file_name);
@@ -335,7 +335,7 @@ static int create_version_file(OBIDMS_column_directory_p column_directory)
 	}
 
 	// Get the file descriptor associated to the version file
-	version_file_descriptor = private_openat(column_dir_file_descriptor, version_file_name, O_RDWR | O_CREAT);
+	version_file_descriptor = openat(column_dir_file_descriptor, version_file_name, O_RDWR | O_CREAT);
 	if (version_file_descriptor < 0)
 	{
 		obi_set_errno(OBICOL_UNKNOWN_ERROR);
@@ -455,7 +455,7 @@ obiversion_t obi_get_latest_version_number(OBIDMS_column_directory_p column_dire
 	}
 
 	// Get the file descriptor associated to the version file
-	version_file_descriptor = private_openat(column_dir_file_descriptor, version_file_name, O_RDONLY);
+	version_file_descriptor = openat(column_dir_file_descriptor, version_file_name, O_RDONLY);
 	if (version_file_descriptor < 0)
 	{
 		obi_set_errno(OBICOL_UNKNOWN_ERROR);
@@ -583,7 +583,7 @@ OBIDMS_column_p obi_create_column(OBIDMS_p dms,
 	}
 
 	// Open the column file
-	column_file_descriptor = private_openat(column_dir_file_descriptor, column_file_name, O_RDWR | O_CREAT);
+	column_file_descriptor = openat(column_dir_file_descriptor, column_file_name, O_RDWR | O_CREAT);
 	if (column_file_descriptor < 0)
 	{
 		obi_set_errno(OBICOL_UNKNOWN_ERROR);
diff --git a/src/obidmscolumndir.c b/src/obidmscolumndir.c
index 08b592d..d292cc7 100644
--- a/src/obidmscolumndir.c
+++ b/src/obidmscolumndir.c
@@ -13,6 +13,7 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <sys/types.h>
+#include <sys/stat.h>
 #include <dirent.h>
 #include <fcntl.h>
 #include <unistd.h>
@@ -158,7 +159,7 @@ OBIDMS_column_directory_p obi_create_column_directory(OBIDMS_p dms, const char*
 	}
 
 	// Try to create the directory
-	if (private_mkdirat(dms_file_descriptor, column_directory_name, 0x777) < 0)
+	if (mkdirat(dms_file_descriptor, column_directory_name, 0x777) < 0)
 	{
 		if (errno == EEXIST)
 			obi_set_errno(OBICOLDIR_EXIST_ERROR);
diff --git a/src/private_at_functions.c b/src/private_at_functions.c
index 14ae832..ebb9fb7 100644
--- a/src/private_at_functions.c
+++ b/src/private_at_functions.c
@@ -47,43 +47,6 @@ char* get_full_path(int directory_file_descriptor, const char* path_name)
 }
 
 
-int private_openat(int directory_file_descriptor, const char* path_name, int flags)
-{
-	char* full_path;
-	int file_descriptor;
-
-	full_path = get_full_path(directory_file_descriptor, path_name);
-	if (full_path == NULL)
-		return -1;
-
-	file_descriptor = open(full_path, flags);
-
-	free(full_path);
-
-	return file_descriptor;
-}
-
-
-int private_mkdirat(int directory_file_descriptor, const char* path_name, mode_t mode)
-{
-	char* full_path;
-
-	full_path = get_full_path(directory_file_descriptor, path_name);
-	if (full_path == NULL)
-		return -1;
-
-	if (mkdir(full_path, mode) < 0)
-	{
-		free(full_path);
-		return -1;
-	}
-
-	free(full_path);
-
-	return 0;
-}
-
-
 DIR* private_opendirat(int directory_file_descriptor, const char* path_name)
 {
 	char* full_path;
@@ -100,3 +63,40 @@ DIR* private_opendirat(int directory_file_descriptor, const char* path_name)
 	return directory;
 }
 
+
+//int private_openat(int directory_file_descriptor, const char* path_name, int flags)
+//{
+//	char* full_path;
+//	int file_descriptor;
+//
+//	full_path = get_full_path(directory_file_descriptor, path_name);
+//	if (full_path == NULL)
+//		return -1;
+//
+//	file_descriptor = open(full_path, flags);
+//
+//	free(full_path);
+//
+//	return file_descriptor;
+//}
+//
+//
+//int private_mkdirat(int directory_file_descriptor, const char* path_name, mode_t mode)
+//{
+//	char* full_path;
+//
+//	full_path = get_full_path(directory_file_descriptor, path_name);
+//	if (full_path == NULL)
+//		return -1;
+//
+//	if (mkdir(full_path, mode) < 0)
+//	{
+//		free(full_path);
+//		return -1;
+//	}
+//
+//	free(full_path);
+//
+//	return 0;
+//}
+
diff --git a/src/private_at_functions.h b/src/private_at_functions.h
index 8484542..f055fa2 100644
--- a/src/private_at_functions.h
+++ b/src/private_at_functions.h
@@ -40,36 +40,6 @@
 char* get_full_path(int directory_file_descriptor, const char* path_name);
 
 
-/**
- * @brief Replacement function for openat() : open a file relative to a directory file descriptor.
- *
- * @param directory_file_descriptor the file descriptor for the directory in which the file should be opened
- * @param path_name the path name for the file, relative to directory_file_descriptor
- * @param flags the access modes
- *
- * @return the file descriptor of the opened file
- *
- * @since June 2015
- * @author Celine Mercier (celine.mercier@metabarcoding.org)
- */
-int private_openat(int directory_file_descriptor, const char* path_name, int flags);
-
-
-/**
- * @brief Replacement function for mkdirat() : create a directory relative to a directory file descriptor.
- *
- * @param directory_file_descriptor the file descriptor for the directory in which the directory should be created
- * @param path_name the path name for the new directory, relative to directory_file_descriptor
- * @param mode the access mode
- *
- * @return the file descriptor of the created directory
- *
- * @since June 2015
- * @author Celine Mercier (celine.mercier@metabarcoding.org)
- */
-int private_mkdirat(int directory_file_descriptor, const char* path_name, mode_t mode);
-
-
 /**
  * @brief Replacement function for opendirat() : open a directory relative to a directory file descriptor.
  *
@@ -84,4 +54,34 @@ int private_mkdirat(int directory_file_descriptor, const char* path_name, mode_t
 DIR* private_opendirat(int directory_file_descriptor, const char* path_name);
 
 
+///**
+// * @brief Replacement function for openat() : open a file relative to a directory file descriptor.
+// *
+// * @param directory_file_descriptor the file descriptor for the directory in which the file should be opened
+// * @param path_name the path name for the file, relative to directory_file_descriptor
+// * @param flags the access modes
+// *
+// * @return the file descriptor of the opened file
+// *
+// * @since June 2015
+// * @author Celine Mercier (celine.mercier@metabarcoding.org)
+// */
+//int private_openat(int directory_file_descriptor, const char* path_name, int flags);
+//
+//
+///**
+// * @brief Replacement function for mkdirat() : create a directory relative to a directory file descriptor.
+// *
+// * @param directory_file_descriptor the file descriptor for the directory in which the directory should be created
+// * @param path_name the path name for the new directory, relative to directory_file_descriptor
+// * @param mode the access mode
+// *
+// * @return the file descriptor of the created directory
+// *
+// * @since June 2015
+// * @author Celine Mercier (celine.mercier@metabarcoding.org)
+// */
+//int private_mkdirat(int directory_file_descriptor, const char* path_name, mode_t mode);
+
+
 #endif /* PRIVATEOPENAT_H_ */