diff --git a/apps/app_chanspy.c b/apps/app_chanspy.c
index 2761c5f..73a9782 100644
--- a/apps/app_chanspy.c
+++ b/apps/app_chanspy.c
@@ -363,7 +363,7 @@ enum {
 	OPTION_NAME              = (1 << 12),   /* Say the name of the person on whom we will spy */
 	OPTION_DTMF_SWITCH_MODES = (1 << 13),   /* Allow numeric DTMF to switch between chanspy modes */
 	OPTION_DTMF_EXIT         = (1 << 14),	/* Set DTMF to exit, added for DAHDIScan integration */
-	OPTION_DTMF_CYCLE        = (1 << 15),	/* Custom DTMF for cycling next avaliable channel, (default is '*') */
+	OPTION_DTMF_CYCLE        = (1 << 15),	/* Custom DTMF for cycling next available channel, (default is '*') */
 	OPTION_DAHDI_SCAN        = (1 << 16),	/* Scan groups in DAHDIScan mode */
 	OPTION_STOP              = (1 << 17),
 	OPTION_EXITONHANGUP      = (1 << 18),   /* Hang up when the spied-on channel hangs up. */
diff --git a/apps/app_mixmonitor.c b/apps/app_mixmonitor.c
index 2cc50e2..5a44570 100644
--- a/apps/app_mixmonitor.c
+++ b/apps/app_mixmonitor.c
@@ -1078,7 +1078,7 @@ static int stop_mixmonitor_full(struct ast_channel *chan, const char *data)
 
 	ast_mutex_lock(&mixmonitor_ds->lock);
 
-	/* closing the filestream here guarantees the file is avaliable to the dialplan
+	/* closing the filestream here guarantees the file is available to the dialplan
 	 * after calling StopMixMonitor */
 	mixmonitor_ds_close_fs(mixmonitor_ds);
 
diff --git a/channels/chan_iax2.c b/channels/chan_iax2.c
index a68f20d..b3324f7 100644
--- a/channels/chan_iax2.c
+++ b/channels/chan_iax2.c
@@ -2808,7 +2808,7 @@ static int create_callno_pools(void)
  * \brief Schedules delayed removal of iax2_pvt call number data
  *
  * \note After MIN_REUSE_TIME has passed for a destroyed iax2_pvt, the callno is
- * avaliable again, and the address from the previous connection must be decremented
+ * available again, and the address from the previous connection must be decremented
  * from the peercnts table.  This function schedules these operations to take place.
  */
 static void sched_delay_remove(struct sockaddr_in *sin, struct callno_entry *callno_entry)
diff --git a/include/asterisk/test.h b/include/asterisk/test.h
index 27ec3cf..606c332 100644
--- a/include/asterisk/test.h
+++ b/include/asterisk/test.h
@@ -45,7 +45,7 @@
 
    Create a callback function for the test using the AST_TEST_DEFINE macro.
 
-   Each defined test has three arguments avaliable to it's test code.
+   Each defined test has three arguments available to it's test code.
        \param struct ast_test_info *info
        \param enum ast_test_command cmd
        \param struct ast_test *test
diff --git a/main/channel.c b/main/channel.c
index b9cab80..157b927 100644
--- a/main/channel.c
+++ b/main/channel.c
@@ -5590,7 +5590,7 @@ struct ast_channel *ast_call_forward(struct ast_channel *caller, struct ast_chan
 			ast_cdr_setaccount(new_chan, oh->account);
 			ast_channel_unlock(new_chan);
 		}
-	} else if (caller) { /* no outgoing helper so use caller if avaliable */
+	} else if (caller) { /* no outgoing helper so use caller if available */
 		call_forward_inherit(new_chan, caller, orig);
 	}
 
diff --git a/main/rtp_engine.c b/main/rtp_engine.c
index 09aeb61..7f5cfff 100644
--- a/main/rtp_engine.c
+++ b/main/rtp_engine.c
@@ -2183,7 +2183,7 @@ static void add_static_payload(int map, const struct ast_format *format, int rtp
 	}
 
 	if (map < 0) {
-		ast_log(LOG_WARNING, "No Dynamic RTP mapping avaliable for format %s\n" ,ast_getformatname(format));
+		ast_log(LOG_WARNING, "No Dynamic RTP mapping available for format %s\n" ,ast_getformatname(format));
 		ast_rwlock_unlock(&static_RTP_PT_lock);
 		return;
 	}