diff --git a/porting/npl/linux/src/os_atomic.c b/porting/npl/linux/src/os_atomic.c
index 3aaec08ad..51260149c 100644
--- a/porting/npl/linux/src/os_atomic.c
+++ b/porting/npl/linux/src/os_atomic.c
@@ -18,6 +18,7 @@
  */
 
 #include <stdint.h>
+#define __USE_GNU
 #include <pthread.h>
 
 #include "nimble/nimble_npl.h"