diff --git a/libavcodec/liba52.c b/libavcodec/liba52.c
index c2da2283d9d8ed0569fd316efd32996f12c7820a..1fbed09d883bbc6544f621f1d94f0808eabb6873 100644
--- a/libavcodec/liba52.c
+++ b/libavcodec/liba52.c
@@ -248,7 +248,7 @@ static int a52_decode_end(AVCodecContext *avctx)
 }
 
 AVCodec liba52_decoder = {
-    "ac3",
+    "liba52",
     CODEC_TYPE_AUDIO,
     CODEC_ID_AC3,
     sizeof(AC3DecodeState),
diff --git a/libavcodec/libgsm.c b/libavcodec/libgsm.c
index 86dfce575c4d3dcde73ca157afcb198c3f7a403a..1e3a3d079fccaa2c1472e5a1279c25851216283a 100644
--- a/libavcodec/libgsm.c
+++ b/libavcodec/libgsm.c
@@ -84,7 +84,7 @@ static int libgsm_encode_frame(AVCodecContext *avctx,
 
 
 AVCodec libgsm_encoder = {
-    "gsm",
+    "libgsm",
     CODEC_TYPE_AUDIO,
     CODEC_ID_GSM,
     0,
@@ -94,7 +94,7 @@ AVCodec libgsm_encoder = {
 };
 
 AVCodec libgsm_ms_encoder = {
-    "gsm",
+    "libgsm_ms",
     CODEC_TYPE_AUDIO,
     CODEC_ID_GSM_MS,
     0,
@@ -123,7 +123,7 @@ static int libgsm_decode_frame(AVCodecContext *avctx,
 }
 
 AVCodec libgsm_decoder = {
-    "gsm",
+    "libgsm",
     CODEC_TYPE_AUDIO,
     CODEC_ID_GSM,
     0,
@@ -134,7 +134,7 @@ AVCodec libgsm_decoder = {
 };
 
 AVCodec libgsm_ms_decoder = {
-    "gsm_ms",
+    "libgsm_ms",
     CODEC_TYPE_AUDIO,
     CODEC_ID_GSM_MS,
     0,