1 files changed, 1 insertions, 0 deletions
diff --git a/seekp.c b/seekp.c
index c97afcf..effab28 100644
--- a/seekp.c
+++ b/seekp.c
@@ -6,6 +6,7 @@
 #include <errno.h>
 #include <string.h>
 
+#include <unistd.h>
 #include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>