diff --git a/src/main.cc b/src/main.cc
index 4b30d23e0a..61cc35f198 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -199,7 +199,7 @@ void usage()
 	fprintf(stderr, "    -T|--re-level <level>          | set 'RE_level' for rules\n");
 	fprintf(stderr, "    -U|--status-file <file>        | Record process status in file\n");
 	fprintf(stderr, "    -W|--watchdog                  | activate watchdog timer\n");
-	fprintf(stderr, "    -X|--broxygen                  | generate documentation based on config file\n");
+	fprintf(stderr, "    -X|--broxygen <cfgfile>        | generate documentation based on config file\n");
 
 #ifdef USE_PERFTOOLS_DEBUG
 	fprintf(stderr, "    -m|--mem-leaks                 | show leaks  [perftools]\n");
@@ -547,7 +547,7 @@ int main(int argc, char** argv)
 	opterr = 0;
 
 	char opts[256];
-	safe_strncpy(opts, "B:e:f:I:i:J:K:n:p:R:r:s:T:t:U:w:x:X:z:CFGNPSWabdghvQ",
+	safe_strncpy(opts, "B:e:f:I:i:J:K:n:p:R:r:s:T:t:U:w:x:X:z:CFNPSWabdghvQ",
 		     sizeof(opts));
 
 #ifdef USE_PERFTOOLS_DEBUG