diff --git a/main.go b/main.go
index 7dd4efc..1bb1a40 100644
--- a/main.go
+++ b/main.go
@@ -216,6 +216,7 @@ func main() {
 	begin := flag.Duration("b", time.Hour, "Begin time") // default BeginTime is 1h ago
 	end := flag.Duration("e", 0, "End time")
 	fuzzyMinutes := flag.Int("fuzziness", 5, "Number of minutes to offset VM restart time when searching for related Host failure event")
+	unreachableMinutes := flag.Int("unreachable", 20, "Number of minutes to search for host HA events either side of a VM failure")
 	flag.Parse()
 
 	// Print logs to file
@@ -293,8 +294,8 @@ func main() {
 
 				// make sure that this event is within 10 minutes either side of the corresponding host failed event
 				if hostFound {
-					unreachableStartComparison := h.CreatedTime.In(location).Add(time.Duration(int64(time.Minute) * -10))
-					unreachableEndComparison := h.CreatedTime.In(location).Add(time.Duration(int64(time.Minute) * 10))
+					unreachableStartComparison := h.CreatedTime.In(location).Add(time.Duration(int64(time.Minute) * -1 * *unreachableMinutes))
+					unreachableEndComparison := h.CreatedTime.In(location).Add(time.Duration(int64(time.Minute) * *unreachableMinutes))
 
 					if haFailedTime.Before(unreachableEndComparison) && haFailedTime.After(unreachableStartComparison) {
 						haUnreachableEvents = append(haUnreachableEvents, h)