diff --git a/channels/chan_agent.c b/channels/chan_agent.c
index 40909b21d39a5c3196cdebaca247c3363f0e8027..46a08f63d461322dc16cd393b99b1395035b1f13 100644
--- a/channels/chan_agent.c
+++ b/channels/chan_agent.c
@@ -1712,15 +1712,15 @@ static int agents_show_online(int fd, int argc, char **argv)
 
 
 
-static char show_agents_usage[] = 
+static const char show_agents_usage[] = 
 "Usage: agent show\n"
 "       Provides summary information on agents.\n";
 
-static char show_agents_online_usage[] =
+static const char show_agents_online_usage[] =
 "Usage: agent show online\n"
 "	Provides a list of all online agents.\n";
 
-static char agent_logoff_usage[] =
+static const char agent_logoff_usage[] =
 "Usage: agent logoff <channel> [soft]\n"
 "       Sets an agent as no longer logged in.\n"
 "       If 'soft' is specified, do not hangup existing calls.\n";
diff --git a/channels/chan_alsa.c b/channels/chan_alsa.c
index 965cb18e045d575fdf544bd98264ada13a0ed703..6c52b3c9f7759a2fce7ea5b6e7df94747db22adf 100644
--- a/channels/chan_alsa.c
+++ b/channels/chan_alsa.c
@@ -916,7 +916,7 @@ static int console_answer(int fd, int argc, char *argv[])
 	return RESULT_SUCCESS;
 }
 
-static char sendtext_usage[] =
+static const char sendtext_usage[] =
 	"Usage: console send text <message>\n"
 	"       Sends a text message for display on the remote terminal.\n";
 
@@ -961,7 +961,7 @@ static int console_sendtext(int fd, int argc, char *argv[])
 	return res;
 }
 
-static char answer_usage[] =
+static const char answer_usage[] =
 	"Usage: console answer\n"
 	"       Answers an incoming call on the console (ALSA) channel.\n";
 
@@ -993,7 +993,7 @@ static int console_hangup(int fd, int argc, char *argv[])
 	return res;
 }
 
-static char hangup_usage[] =
+static const char hangup_usage[] =
 	"Usage: console hangup\n"
 	"       Hangs up any call currently placed on the console.\n";
 
@@ -1054,7 +1054,7 @@ static int console_dial(int fd, int argc, char *argv[])
 	return res;
 }
 
-static char dial_usage[] =
+static const char dial_usage[] =
 	"Usage: console dial [extension[@context]]\n"
 	"       Dials a given extension (and context if specified)\n";
 
diff --git a/channels/chan_features.c b/channels/chan_features.c
index 8a5846d2709f19f099f71bfb52df04ad8b000d1c..83e6e4ae590d04d47cde93f541e6045a5752bb49 100644
--- a/channels/chan_features.c
+++ b/channels/chan_features.c
@@ -529,7 +529,7 @@ static int features_show(int fd, int argc, char **argv)
 	return RESULT_SUCCESS;
 }
 
-static char show_features_usage[] = 
+static const char show_features_usage[] = 
 "Usage: feature show channels\n"
 "       Provides summary information on feature channels.\n";
 
diff --git a/channels/chan_gtalk.c b/channels/chan_gtalk.c
index e5ec59de6c7be5e53a2d021b902a460743d149ba..456a536c92b7c3058de0f15bbd44ebdceb603f9b 100644
--- a/channels/chan_gtalk.c
+++ b/channels/chan_gtalk.c
@@ -225,11 +225,11 @@ static struct ast_rtp_protocol gtalk_rtp = {
 	get_codec: gtalk_get_codec,
 };
 
-static char debug_usage[] = 
+static const char debug_usage[] = 
 "Usage: gtalk show channels\n" 
 "       Shows current state of the Gtalk channels.\n";
 
-static char reload_usage[] = 
+static const char reload_usage[] = 
 "Usage: gtalk reload\n" 
 "       Reload gtalk channel driver.\n";
 
diff --git a/channels/chan_local.c b/channels/chan_local.c
index e4c7612cf5cd86bb93eb1f3ce156f5029ab2fecb..b8d112bcd5ae06eb97b40fa2abf0dad19642f0d6 100644
--- a/channels/chan_local.c
+++ b/channels/chan_local.c
@@ -659,7 +659,7 @@ static int locals_show(int fd, int argc, char **argv)
 	return RESULT_SUCCESS;
 }
 
-static char show_locals_usage[] = 
+static const char show_locals_usage[] = 
 "Usage: local show channels\n"
 "       Provides summary information on active local proxy channels.\n";
 
diff --git a/channels/chan_mgcp.c b/channels/chan_mgcp.c
index f798bbd06e59a47e4d229de95a920bc575254084..2e0833b5fb2986f95019896bc74bb2dfb2ec80d9 100644
--- a/channels/chan_mgcp.c
+++ b/channels/chan_mgcp.c
@@ -1044,24 +1044,24 @@ static int mgcp_show_endpoints(int fd, int argc, char *argv[])
 	return RESULT_SUCCESS;
 }
 
-static char show_endpoints_usage[] = 
+static const char show_endpoints_usage[] = 
 "Usage: mgcp show endpoints\n"
 "       Lists all endpoints known to the MGCP (Media Gateway Control Protocol) subsystem.\n";
 
-static char audit_endpoint_usage[] = 
+static const char audit_endpoint_usage[] = 
 "Usage: mgcp audit endpoint <endpointid>\n"
 "       Lists the capabilities of an endpoint in the MGCP (Media Gateway Control Protocol) subsystem.\n"
 "       mgcp debug MUST be on to see the results of this command.\n";
 
-static char debug_usage[] = 
+static const char debug_usage[] = 
 "Usage: mgcp set debug\n"
 "       Enables dumping of MGCP packets for debugging purposes\n";
 
-static char no_debug_usage[] = 
+static const char no_debug_usage[] = 
 "Usage: mgcp set debug off\n"
 "       Disables dumping of MGCP packets for debugging purposes\n";
 
-static char mgcp_reload_usage[] =
+static const char mgcp_reload_usage[] =
 "Usage: mgcp reload\n"
 "       Reloads MGCP configuration from mgcp.conf\n"
 "       Deprecated:  please use 'reload chan_mgcp.so' instead.\n";
diff --git a/channels/chan_oss.c b/channels/chan_oss.c
index cec9f565a654e47e6d39b3923e4ed3272bf1eb88..9f2c3026f40423761d8853aacee7946cfb5bddfa 100644
--- a/channels/chan_oss.c
+++ b/channels/chan_oss.c
@@ -1336,7 +1336,7 @@ static int console_transfer(int fd, int argc, char *argv[])
 	return RESULT_SUCCESS;
 }
 
-static char transfer_usage[] =
+static const char transfer_usage[] =
 	"Usage: console transfer <extension>[@context]\n"
 	"       Transfers the currently connected call to the given extension (and\n"
 	"context if specified)\n";
@@ -1363,7 +1363,7 @@ static int console_active(int fd, int argc, char *argv[])
 	return RESULT_SUCCESS;
 }
 
-static char active_usage[] =
+static const char active_usage[] =
 	"Usage: console active [device]\n"
 	"       If used without a parameter, displays which device is the current\n"
 	"console.  If a device is specified, the console sound device is changed to\n"
diff --git a/channels/chan_skinny.c b/channels/chan_skinny.c
index 951d9b8a309033905054dbea1d97b25a4ac14fe0..e01590a4291567e1381bc497ba73eec101036fdf 100644
--- a/channels/chan_skinny.c
+++ b/channels/chan_skinny.c
@@ -1947,23 +1947,23 @@ static int skinny_show_lines(int fd, int argc, char *argv[])
 	return RESULT_SUCCESS;
 }
 
-static char show_devices_usage[] =
+static const char show_devices_usage[] =
 "Usage: skinny show devices\n"
 "       Lists all devices known to the Skinny subsystem.\n";
 
-static char show_lines_usage[] =
+static const char show_lines_usage[] =
 "Usage: skinny show lines\n"
 "       Lists all lines known to the Skinny subsystem.\n";
 
-static char debug_usage[] =
+static const char debug_usage[] =
 "Usage: skinny set debug\n"
 "       Enables dumping of Skinny packets for debugging purposes\n";
 
-static char no_debug_usage[] =
+static const char no_debug_usage[] =
 "Usage: skinny set debug off\n"
 "       Disables dumping of Skinny packets for debugging purposes\n";
 
-static char reset_usage[] =
+static const char reset_usage[] =
 "Usage: skinny reset <DeviceId|all> [restart]\n"
 "       Causes a Skinny device to reset itself, optionally with a full restart\n";
 
diff --git a/channels/iax2-provision.c b/channels/iax2-provision.c
index acd7beda862026afaf6a6dffe59e909846b15bf8..159d8686e3b9676036546d4878050ef183856d8c 100644
--- a/channels/iax2-provision.c
+++ b/channels/iax2-provision.c
@@ -399,7 +399,7 @@ static int iax_process_template(struct ast_config *cfg, char *s, char *def)
 	return 0;
 }
 
-static char show_provisioning_usage[] = 
+static const char show_provisioning_usage[] = 
 "Usage: iax list provisioning [template]\n"
 "       Lists all known IAX provisioning templates or a\n"
 "       specific one if specified.\n";