diff --git a/.codespellrc b/.codespellrc
index 442f4656c..ac22a4c37 100644
--- a/.codespellrc
+++ b/.codespellrc
@@ -8,3 +8,6 @@ exclude-file = .codespell-ignore-lines
 # Ignore complete files (e.g. legal text or other immutable material).
 skip =
   LICENSE,
+
+# Ignore words list (FTP protocol commands and technical terms)
+ignore-words-list = ALLO
diff --git a/netutils/codecs/md5.c b/netutils/codecs/md5.c
index 75dfe3f0c..dade6abd1 100644
--- a/netutils/codecs/md5.c
+++ b/netutils/codecs/md5.c
@@ -53,6 +53,7 @@
 #include <string.h>
 #include <stdint.h>
 #include <fcntl.h>
+#include <unistd.h>
 
 #include "netutils/md5.h"
 
diff --git a/netutils/ftpd/ftpd.c b/netutils/ftpd/ftpd.c
index 12491030a..4f5cc4667 100644
--- a/netutils/ftpd/ftpd.c
+++ b/netutils/ftpd/ftpd.c
@@ -48,6 +48,7 @@
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <pthread.h>
 #include <unistd.h>
 #include <dirent.h>
 #include <strings.h>
diff --git a/system/lsan/lsan_main.c b/system/lsan/lsan_main.c
index d0c8a06ea..f4a1f8579 100644
--- a/system/lsan/lsan_main.c
+++ b/system/lsan/lsan_main.c
@@ -26,6 +26,7 @@
 
 #include <nuttx/config.h>
 #include <stdio.h>
+#include <unistd.h>
 
 /****************************************************************************
  * Public Functions