diff --git a/include/net/socket_select.h b/include/net/socket_select.h
index 5c3e14f23be..70a621bf780 100644
--- a/include/net/socket_select.h
+++ b/include/net/socket_select.h
@@ -14,6 +14,7 @@
  * @{
  */
 
+#include <toolchain.h>
 #include <net/socket_types.h>
 
 #ifdef __cplusplus