diff --git a/mgetty/tools/microcom.c b/mgetty/tools/microcom.c

index 38d35bd..bf8bf37 100644

--- a/mgetty/tools/microcom.c

+++ b/mgetty/tools/microcom.c

@@ -7,6 +7,7 @@

  * Calls routines in io.c, tio.c

  */

 #include <stdio.h>

+#include <stdlib.h>

 #include <fcntl.h>

 #include <unistd.h>

 #include <string.h>

diff --git a/mgetty/frontends/X11/viewfax/viewfax.c b/mgetty/frontends/X11/viewfax/viewfax.c

index 204b80b..5771b4d 100644

--- a/mgetty/frontends/X11/viewfax/viewfax.c

+++ b/mgetty/frontends/X11/viewfax/viewfax.c

@@ -451,6 +451,8 @@ usleep(unsigned usecs)

     (void) select(1, NULL, NULL, NULL, &t);

     return 0;

 }

+#else

+#include <unistd.h>

 #endif

 #ifndef REAL_ROOT