--- a/tests/unit/test_unix_socket.c
+++ b/tests/unit/test_unix_socket.c
@@ -22,7 +22,7 @@
 #include <sys/wait.h>
 #include <stdlib.h>
 
-#define HIGH_FD_COUNT LTTCOMM_MAX_SEND_FDS
+#define HIGH_FD_COUNT LTTCOMM_MAX_SEND_FDS - 1
 #define MESSAGE_COUNT 4
 #define LARGE_PAYLOAD_SIZE 4 * 1024
 #define LARGE_PAYLOAD_RECV_SIZE	100