3 files changed, 11 insertions, 1 deletions
diff --git a/apps/examples/sendmail/host.c b/apps/examples/sendmail/host.c
index d603372ad..28af0d53c 100644
--- a/apps/examples/sendmail/host.c
+++ b/apps/examples/sendmail/host.c
@@ -43,6 +43,9 @@
 #include <string.h>
 #include <errno.h>
 
+#include <netinet/in.h>
+
+#include <nuttx/net/ip.h>
 #include <apps/netutils/smtp.h>
 
 /****************************************************************************
@@ -99,5 +102,6 @@ int main(int argc, char **argv, char **envp)
                 g_msg_body, strlen(g_msg_body));
       smtp_close(handle);
     }
+
   return 0;
 }
diff --git a/apps/examples/sendmail/hostdefs.h b/apps/examples/sendmail/hostdefs.h
index e9860c22d..e29df7856 100644
--- a/apps/examples/sendmail/hostdefs.h
+++ b/apps/examples/sendmail/hostdefs.h
@@ -44,8 +44,10 @@
 #include <stdbool.h>
 #include <stdio.h>
 
+#include <arpa/inet.h>
+
 /****************************************************************************
- * Preprocessor Defintiions
+ * Pre-processor Definitions
  *****************************************************************************/
 
 #define HTONS(a) htons(a)
diff --git a/apps/examples/sendmail/target.c b/apps/examples/sendmail/target.c
index 4d7232b4d..684f2b742 100644
--- a/apps/examples/sendmail/target.c
+++ b/apps/examples/sendmail/target.c
@@ -45,6 +45,10 @@
 #include <errno.h>
 
 #include <net/if.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
+
+#include <nuttx/net/ip.h>
 #include <apps/netutils/netlib.h>
 #include <apps/netutils/smtp.h>