diff --git a/main.c b/main.c
index 02712ba..985782f 100644
--- a/main.c
+++ b/main.c
@@ -59,7 +59,7 @@ static int get_input(int num_threads, struct input **res) {
 		if (parse_result == -1) {
 			// On bad input, we should assume an EOF and stop.
 			break;
-		} else if (current_input.recipient >= num_threads || current_input.recipient < 0) {
+		} else if (current_input.recipient > num_threads || current_input.recipient < 0) {
 			printf("Invalid recipient id.\n");
 			continue;
 		}