diff --git a/contrib/pgcrypto/px.h b/contrib/pgcrypto/px.h
index e000883d392..4fa6bd69ee2 100644
--- a/contrib/pgcrypto/px.h
+++ b/contrib/pgcrypto/px.h
@@ -26,13 +26,14 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- * $Id: px.h,v 1.7 2001/11/30 17:39:20 momjian Exp $
+ * $Id: px.h,v 1.8 2002/10/21 18:56:30 petere Exp $
  */
 
 #ifndef __PX_H
 #define __PX_H
 
 #include <sys/types.h>
+#include <sys/param.h>
 #ifdef HAVE_ENDIAN_H
 #include <endian.h>
 #endif