diff --git a/direct.c b/direct.c
index fee733d..cf53657 100644
--- a/direct.c
+++ b/direct.c
@@ -19,6 +19,7 @@
 */
 
 #define _GNU_SOURCE
+#define _FILE_OFFSET_BITS 64
 
 #include <config.h>
 
diff --git a/plugin-manager.c b/plugin-manager.c
index 6a88ad3..19cf20f 100644
--- a/plugin-manager.c
+++ b/plugin-manager.c
@@ -15,6 +15,8 @@
    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
+#define _GNU_SOURCE
+#define _FILE_OFFSET_BITS 64
 
 #include <config.h>
 #include <plugin.h>
diff --git a/utils.c b/utils.c
index 27dd327..2f65918 100644
--- a/utils.c
+++ b/utils.c
@@ -16,6 +16,9 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+#define _GNU_SOURCE
+#define _FILE_OFFSET_BITS 64
+
 #include <config.h>
 #include "utils.h"
 #include <errno.h>