diff --git a/src/common/matroska.h b/src/common/matroska.h
index 3535457a0..cd1fd3430 100644
--- a/src/common/matroska.h
+++ b/src/common/matroska.h
@@ -27,7 +27,6 @@
 #define MKV_A_AAC_4SSR   "A_AAC/MPEG4/SSR"
 #define MKV_A_AAC_4LTP   "A_AAC/MPEG4/LTP"
 #define MKV_A_AAC_4SBR   "A_AAC/MPEG4/LC/SBR"
-#define MKV_A_AAC        "A_AAC"
 #define MKV_A_AC3        "A_AC3"
 #define MKV_A_DTS        "A_DTS"
 #define MKV_A_MP3        "A_MPEG/L3"
diff --git a/src/input/r_matroska.cpp b/src/input/r_matroska.cpp
index 6edbf36ac..1210c11e2 100644
--- a/src/input/r_matroska.cpp
+++ b/src/input/r_matroska.cpp
@@ -495,14 +495,7 @@ kax_reader_c::verify_tracks() {
                      (t->codec_id == MKV_A_AAC_2SBR) ||
                      (t->codec_id == MKV_A_AAC_4SBR))
             t->a_formattag = FOURCC('M', 'P', '4', 'A');
-          else if (t->codec_id == MKV_A_AAC) {
-            if ((t->private_data == NULL) || (t->private_size < 2)) {
-              mxwarn(PFX "The AAC track number %u is missing its private "
-                     "data. Ignoring this track.\n", t->tnum);
-              continue;
-            }
-            t->a_formattag = FOURCC('M', 'P', '4', 'A');
-          } else if (starts_with(t->codec_id, MKV_A_REAL_COOK,
+          else if (starts_with(t->codec_id, MKV_A_REAL_COOK,
                                  strlen("A_REAL/")))
             t->a_formattag = FOURCC('r', 'e', 'a', 'l');
           else if (t->codec_id == MKV_A_FLAC) {
@@ -1659,7 +1652,7 @@ kax_reader_c::create_packetizer(int64_t tid) {
             int channels, sfreq, osfreq;
             bool sbr;
 
-            if (t->codec_id == MKV_A_AAC) {
+            if ((t->private_data != NULL) && (ti->private_size >= 2)) {
               id = AAC_ID_MPEG4;
               if (!parse_aac_data((unsigned char *)t->private_data,
                                   t->private_size, profile, channels, sfreq,
diff --git a/src/output/p_aac.cpp b/src/output/p_aac.cpp
index 9219c6a43..205009b4a 100644
--- a/src/output/p_aac.cpp
+++ b/src/output/p_aac.cpp
@@ -126,10 +126,7 @@ aac_packetizer_c::get_aac_packet(unsigned long *header,
 
 void
 aac_packetizer_c::set_headers() {
-  if ((ti->private_size > 0) && (ti->private_size != 2) &&
-      (ti->private_size != 5))
-    set_codec_id(MKV_A_AAC);
-  else if (id == AAC_ID_MPEG4) {
+  if (id == AAC_ID_MPEG4) {
     if (profile == AAC_PROFILE_MAIN)
       set_codec_id(MKV_A_AAC_4MAIN);
     else if (profile == AAC_PROFILE_LC)
@@ -157,7 +154,8 @@ aac_packetizer_c::set_headers() {
   set_audio_sampling_freq((float)samples_per_sec);
   set_audio_channels(channels);
 
-  if ((ti->private_data != NULL) && (ti->private_size > 0))
+  if ((ti->private_data != NULL) && (ti->private_size > 0) &&
+      (ti->private_size != 2) && (ti->private_size != 5))
     set_codec_private(ti->private_data, ti->private_size);
 
   generic_packetizer_c::set_headers();