diff --git a/channels/chan_modem.c b/channels/chan_modem.c
index 4a93f35d0c..f861bfb7ce 100755
--- a/channels/chan_modem.c
+++ b/channels/chan_modem.c
@@ -12,15 +12,14 @@
  */
 
 #include <stdio.h>
-#include <string.h>
-#include <ctype.h>
 #include <stdlib.h>
-#include <unistd.h>
-#include <sys/socket.h>
+#include <ctype.h>
+#include <string.h>
 #include <sys/time.h>
 #include <errno.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
+#include <sys/socket.h>
 #include <fcntl.h>
 #include <sys/ioctl.h>
 #include <sys/termios.h>