diff --git a/userspace/falco/app_actions/init_clients.cpp b/userspace/falco/app_actions/init_clients.cpp
index 776f3a58..fb94b698 100644
--- a/userspace/falco/app_actions/init_clients.cpp
+++ b/userspace/falco/app_actions/init_clients.cpp
@@ -21,7 +21,7 @@ using namespace falco::app;
 application::run_result application::init_clients()
 {
 #ifndef MINIMAL_BUILD
-	// k8s and mesos clients are useful only if syscall source is enabled
+	// k8s is useful only if the syscall source is enabled
 	if (m_state->enabled_sources.find(falco_common::syscall_source) == m_state->enabled_sources.end())
 	{
 		return run_result::ok();
@@ -59,7 +59,9 @@ application::run_result application::init_clients()
 	}
 
 	//
+	// DEPRECATED!
 	// Run mesos, if required
+	// todo(leogr): remove in Falco 0,.35
 	//
 	if(!m_options.mesos_api.empty())
 	{
@@ -67,10 +69,12 @@ application::run_result application::init_clients()
 		// passes a pointer but the inspector does
 		// *not* own it and does not use it after
 		// init_mesos_client() returns.
+		falco_logger::log(LOG_WARNING, "Mesos support has been DEPRECATED and will be removed in the next version!\n");
 		inspector->init_mesos_client(&(m_options.mesos_api), m_options.verbose);
 	}
 	else if(char* mesos_api_env = getenv("FALCO_MESOS_API"))
 	{
+		falco_logger::log(LOG_WARNING, "Mesos support has been DEPRECATED and will be removed in the next version!\n");
 		std::string mesos_api_copy = mesos_api_env;
 		inspector->init_mesos_client(&mesos_api_copy, m_options.verbose);
 	}
diff --git a/userspace/falco/app_cmdline_options.cpp b/userspace/falco/app_cmdline_options.cpp
index 9bdcc5f7..0483ee62 100644
--- a/userspace/falco/app_cmdline_options.cpp
+++ b/userspace/falco/app_cmdline_options.cpp
@@ -190,14 +190,14 @@ void cmdline_options::define()
 		("list-plugins",                  "Print info on all loaded plugins and exit.", cxxopts::value(list_plugins)->default_value("false"))
 #endif
 #ifndef MINIMAL_BUILD
-		("m,mesos-api",                   "Enable Mesos support by connecting to the API server specified as argument. E.g. \"http://admin:password@127.0.0.1:5050\". Marathon url is optional and defaults to Mesos address, port 8080. The API servers can also be specified via the environment variable FALCO_MESOS_API.", cxxopts::value(mesos_api), "<url[,marathon_url]>")
+		("m,mesos-api",                   "This feature has been DEPRECATED and will be removed in the next version.", cxxopts::value(mesos_api), "<url[,marathon_url]>")
 #endif
 		("M",                             "Stop collecting after <num_seconds> reached.", cxxopts::value(duration_to_tot)->default_value("0"), "<num_seconds>")
 		("markdown",                      "When used with --list/--list-syscall-events, print the content in Markdown format", cxxopts::value<bool>(markdown))
 		("N",                             "When used with --list, only print field names.", cxxopts::value(names_only)->default_value("false"))
 		("o,option",                      "Set the value of option <opt> to <val>. Overrides values in configuration file. <opt> can be identified using its location in configuration file using dot notation. Elements which are entries of lists can be accessed via square brackets [].\n    E.g. base.id = val\n         base.subvalue.subvalue2 = val\n         base.list[1]=val", cxxopts::value(cmdline_config_options), "<opt>=<val>")
 		("plugin-info",                   "Print info for a single plugin and exit.\nThis includes all descriptivo info like name and author, along with the\nschema format for the init configuration and a list of suggested open parameters.\n<plugin_name> can be the name of the plugin or its configured library_path.", cxxopts::value(print_plugin_info), "<plugin_name>")
-		("p,print",                       "Add additional information to each falco notification's output.\nWith -pc or -pcontainer will use a container-friendly format.\nWith -pk or -pkubernetes will use a kubernetes-friendly format.\nWith -pm or -pmesos will use a mesos-friendly format.\nAdditionally, specifying -pc/-pk/-pm will change the interpretation of %container.info in rule output fields.", cxxopts::value(print_additional), "<output_format>")
+		("p,print",                       "Add additional information to each falco notification's output.\nWith -pc or -pcontainer will use a container-friendly format.\nWith -pk or -pkubernetes will use a kubernetes-friendly format.\nAdditionally, specifying -pc/-pk will change the interpretation of %container.info in rule output fields.", cxxopts::value(print_additional), "<output_format>")
 		("P,pidfile",                     "When run as a daemon, write pid to specified file", cxxopts::value(pidfilename)->default_value("/var/run/falco.pid"), "<pid_file>")
 		("r",                             "Rules file/directory (defaults to value set in configuration file, or /etc/falco_rules.yaml). This option can be passed multiple times to read from multiple files/directories.", cxxopts::value<std::vector<std::string>>(), "<rules_file>")
 		("s",                             "If specified, append statistics related to Falco's reading/processing of events to this file (only useful in live mode).", cxxopts::value(stats_filename), "<stats_file>")