diff --git a/src/plugins/exec/exec-command.c b/src/plugins/exec/exec-command.c
index cbae927c9..bcb82e994 100644
--- a/src/plugins/exec/exec-command.c
+++ b/src/plugins/exec/exec-command.c
@@ -813,7 +813,8 @@ exec_command_init ()
            "the command has some unsafe data, for example the content of a "
             "message from another user) (default)\n"
            "     -bg: run process in background: do not display process output "
-           "neither return code (not compatible with options -o/-n)\n"
+           "neither return code (not compatible with options "
+           "-o/-oc/-n/-nf/-pipe/-hsignal)\n"
            "   -nobg: catch process output and display return code (default)\n"
            "  -stdin: create a pipe for sending data to the process (with "
            "/exec -in/-inclose)\n"
@@ -823,15 +824,15 @@ exec_command_init ()
            "created)\n"
            "      -l: display locally output of command on buffer (default)\n"
            "      -o: send output of command to the buffer without executing "
-           "commands (not compatible with option -bg)\n"
+           "commands (not compatible with options -bg/-pipe/-hsignal)\n"
            "     -oc: send output of command to the buffer and execute commands "
            "(lines starting with \"/\" or another custom command char) "
-           "(not compatible with option -bg)\n"
+           "(not compatible with options -bg/-pipe/-hsignal)\n"
            "      -n: display output of command in a new buffer (not compatible "
-           "with option -bg)\n"
+           "with options -bg/-pipe/-hsignal)\n"
            "     -nf: display output of command in a new buffer with free "
            "content (no word-wrap, no limit on number of lines) (not compatible "
-           "with option -bg)\n"
+           "with options -bg/-pipe/-hsignal)\n"
            "     -cl: clear the new buffer before displaying output\n"
            "   -nocl: append to the new buffer without clear (default)\n"
            "     -sw: switch to the output buffer (default)\n"
@@ -854,9 +855,9 @@ exec_command_init ()
            "line); if there are spaces in command/arguments, enclose them with "
            "double quotes; variable $line is replaced by the line (by default "
            "the line is added after the command, separated by a space) "
-           "(not compatible with options -bg/-o/-n)\n"
+           "(not compatible with options -bg/-o/-oc/-n/-nf)\n"
            "-hsignal: send the output as a hsignal (to be used for example in "
-           "a trigger) (not compatible with options -bg/-o/-n)\n"
+           "a trigger) (not compatible with options -bg/-o/-oc/-n/-nf)\n"
            " command: the command to execute; if beginning with \"url:\", the "
            "shell is disabled and the content of URL is downloaded and sent as "
            "output\n"