portability fixes for sshsig
diff --git a/sshsig.c b/sshsig.c
index c1f2d80..3dbdc85 100644
--- a/sshsig.c
+++ b/sshsig.c
@@ -14,6 +14,8 @@
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#include "includes.h"
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdarg.h>