diff --git a/libavcodec/allcodecs.c b/libavcodec/allcodecs.c
index f2d752095e..27de3d06b4 100644
--- a/libavcodec/allcodecs.c
+++ b/libavcodec/allcodecs.c
@@ -531,7 +531,7 @@ void avcodec_register_all(void)
 #endif //CONFIG_RAWVIDEO_DECODER
 #endif /* CONFIG_DECODERS */
 
-#ifdef AMR_NB
+#if defined(AMR_NB) || defined(AMR_NB_FIXED)
 #ifdef CONFIG_AMR_NB_DECODER
     register_avcodec(&amr_nb_decoder);
 #endif //CONFIG_AMR_NB_DECODER
@@ -540,7 +540,7 @@ void avcodec_register_all(void)
     register_avcodec(&amr_nb_encoder);
 #endif //CONFIG_AMR_NB_ENCODER
 #endif //CONFIG_ENCODERS
-#endif /* AMR_NB */
+#endif /* AMR_NB || AMR_NB_FIXED */
 
 #ifdef AMR_WB
 #ifdef CONFIG_AMR_WB_DECODER