diff --git a/src/core/main.c b/src/core/main.c
index 5f8f251e9a2..0c1e5535059 100644
--- a/src/core/main.c
+++ b/src/core/main.c
@@ -1519,7 +1519,7 @@ static int become_shutdown(int objective, int retval) {
                 exit_code[DECIMAL_STR_MAX(uint8_t) + 1],
                 timeout[DECIMAL_STR_MAX(usec_t) + 1];
 
-        const char* command_line[13] = {
+        const char* command_line[14] = {
                 SYSTEMD_SHUTDOWN_BINARY_PATH,
                 table[objective],
                 "--timeout", timeout,