diff --git a/lib/socket/extra.c b/lib/socket/extra.c
index f76d261a1..c51fdec09 100644
--- a/lib/socket/extra.c
+++ b/lib/socket/extra.c
@@ -3,8 +3,10 @@
 
 #include <errno.h>
 #include <stdlib.h>
+#include <stdio.h>
 #include <fcntl.h>
 #include <sys/types.h>
+#include <unistd.h>
 #include <net/gen/socket.h>
 #include <net/gen/emu.h>
 #include <net/gen/tcp.h>
diff --git a/lib/socket/socket.c b/lib/socket/socket.c
index ca3684fbd..a064380c1 100644
--- a/lib/socket/socket.c
+++ b/lib/socket/socket.c
@@ -2,6 +2,7 @@
 /* bsd-socket(2)-lookalike */
 
 #include <errno.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <fcntl.h>
 #include <sys/types.h>