diff --git a/pjmedia/include/pjmedia/config.h b/pjmedia/include/pjmedia/config.h
index 8408f0ae86..86746c81c1 100644
--- a/pjmedia/include/pjmedia/config.h
+++ b/pjmedia/include/pjmedia/config.h
@@ -705,7 +705,7 @@
 
 
 /**
- * Speex Accoustic Echo Cancellation (AEC).
+ * Speex Acoustic Echo Cancellation (AEC).
  * By default is enabled.
  */
 #ifndef PJMEDIA_HAS_SPEEX_AEC
@@ -735,7 +735,7 @@
 
 
 /**
- * WebRtc Accoustic Echo Cancellation (AEC).
+ * WebRtc Acoustic Echo Cancellation (AEC).
  * By default is disabled.
  */
 #ifndef PJMEDIA_HAS_WEBRTC_AEC
diff --git a/pjmedia/include/pjmedia/echo.h b/pjmedia/include/pjmedia/echo.h
index 6d05f7a0f9..9045918217 100644
--- a/pjmedia/include/pjmedia/echo.h
+++ b/pjmedia/include/pjmedia/echo.h
@@ -29,14 +29,14 @@
 
 
 /**
- * @defgroup PJMEDIA_Echo_Cancel Accoustic Echo Cancellation API
+ * @defgroup PJMEDIA_Echo_Cancel Acoustic Echo Cancellation API
  * @ingroup PJMEDIA_PORT
  * @brief Echo Cancellation API.
  * @{
  *
  * This section describes API to perform echo cancellation to audio signal.
  * There may be multiple echo canceller implementation in PJMEDIA, ranging
- * from simple echo suppressor to a full Accoustic Echo Canceller/AEC. By 
+ * from simple echo suppressor to a full Acoustic Echo Canceller/AEC. By 
  * using this API, application should be able to use which EC backend to
  * use base on the requirement and capability of the platform.
  */
@@ -71,7 +71,7 @@ typedef enum pjmedia_echo_flag
     /**
      * If PJMEDIA_ECHO_SIMPLE flag is specified during echo canceller
      * creation, then a simple echo suppressor will be used instead of
-     * an accoustic echo cancellation. You can only choose one backend.
+     * an acoustic echo cancellation. You can only choose one backend.
      */
     PJMEDIA_ECHO_SIMPLE = 2,
 
@@ -268,7 +268,7 @@ PJ_DECL(void) pjmedia_echo_stat_default(pjmedia_echo_stat *stat);
  *                          is not known.
  * @param options           Options. If PJMEDIA_ECHO_SIMPLE is specified,
  *                          then a simple echo suppressor implementation 
- *                          will be used instead of an accoustic echo 
+ *                          will be used instead of an acoustic echo 
  *                          cancellation.
  *                          See #pjmedia_echo_flag for other options.
  * @param p_echo            Pointer to receive the Echo Canceller state.
@@ -296,7 +296,7 @@ PJ_DECL(pj_status_t) pjmedia_echo_create(pj_pool_t *pool,
  *                          is not known.
  * @param options           Options. If PJMEDIA_ECHO_SIMPLE is specified,
  *                          then a simple echo suppressor implementation 
- *                          will be used instead of an accoustic echo 
+ *                          will be used instead of an acoustic echo 
  *                          cancellation.
  *                          See #pjmedia_echo_flag for other options.
  * @param p_echo            Pointer to receive the Echo Canceller state.
diff --git a/pjmedia/include/pjmedia/echo_port.h b/pjmedia/include/pjmedia/echo_port.h
index 228acf16d2..10d1b0fd02 100644
--- a/pjmedia/include/pjmedia/echo_port.h
+++ b/pjmedia/include/pjmedia/echo_port.h
@@ -21,7 +21,7 @@
 
 /**
  * @file echo_port.h
- * @brief AEC (Accoustic Echo Cancellation) media port.
+ * @brief AEC (Acoustic Echo Cancellation) media port.
  */
 #include <pjmedia/port.h>
 
diff --git a/pjmedia/src/pjmedia/audiodev.c b/pjmedia/src/pjmedia/audiodev.c
index 24e4e48e66..ff7a2650b5 100644
--- a/pjmedia/src/pjmedia/audiodev.c
+++ b/pjmedia/src/pjmedia/audiodev.c
@@ -43,7 +43,7 @@ static struct cap_info
     DEFINE_CAP("meter-out",   "Output meter"),
     DEFINE_CAP("route-in",    "Input routing"),
     DEFINE_CAP("route-out",   "Output routing"),
-    DEFINE_CAP("aec",         "Accoustic echo cancellation"),
+    DEFINE_CAP("aec",         "Acoustic echo cancellation"),
     DEFINE_CAP("aec-tail",    "Tail length setting for AEC"),
     DEFINE_CAP("vad",         "Voice activity detection"),
     DEFINE_CAP("cng",         "Comfort noise generation"),
diff --git a/pjsip-apps/build/get-footprint.py b/pjsip-apps/build/get-footprint.py
index 3dbb8c82e6..dc89dfad90 100644
--- a/pjsip-apps/build/get-footprint.py
+++ b/pjsip-apps/build/get-footprint.py
@@ -83,7 +83,7 @@
     ['HAS_PJNATH_ICE',		'PJNATH ICE'],
 
     # PJMEDIA
-    ['HAS_PJMEDIA_EC',		'PJMEDIA accoustic echo cancellation'],
+    ['HAS_PJMEDIA_EC',		'PJMEDIA acoustic echo cancellation'],
     ['HAS_PJMEDIA_SND_DEV',	'PJMEDIA sound device backend (platform specific)'],
     ['HAS_PJMEDIA_SILENCE_DET',	'PJMEDIA Adaptive silence detector'],
     ['HAS_PJMEDIA',		'PJMEDIA endpoint'],