diff --git a/booking.regn_node.inc b/booking.regn_node.inc
index 88cac81..98d2054 100644
--- a/booking.regn_node.inc
+++ b/booking.regn_node.inc
@@ -412,7 +412,10 @@ function booking_update($node) {
 		//check if the key is a field that belongs in the database
 		if ((strpos($key, "booking_") === 0) || $key === "nid") {
 			//do we need to treat this field carefully?
-			if (in_array($key, $boolean_keys, FALSE)) {
+			if (strpos($key, "booking_dob") === 0) {
+				$data[$key] = _date_to_ts($value);
+			}
+			elseif (in_array($key, $boolean_keys, FALSE)) {
 				$data[$key] = $value == 1 ? 'Y' : 'N';
 			} 
 			elseif (in_array($key, $default_zero_keys, FALSE)) {