source/fbyteswap.c |    1 +
 source/util.c      |    1 +
 2 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/source/fbyteswap.c b/source/fbyteswap.c
index 83015b9..c9033c3 100644
--- a/source/fbyteswap.c
+++ b/source/fbyteswap.c
@@ -39,6 +39,7 @@ and shall not be used for advertising or product endorsement purposes.
 
 #include <stdio.h>
 #include <fcntl.h>
+#include <unistd.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 void byteswap();
diff --git a/source/util.c b/source/util.c
index 6fff179..ca7a957 100644
--- a/source/util.c
+++ b/source/util.c
@@ -89,6 +89,7 @@ and shall not be used for advertising or product endorsement purposes.
 
 *******************************************************************************/
 #include  <sys/time.h>	/* ... for picking up date & time	*/
+#include <time.h>
 #include  <signal.h>	/* ... for capturing kill		*/
 #include  "util.h"