diff --git a/libavcodec/g723_1enc.c b/libavcodec/g723_1enc.c
index 2fb4b7fc82..64899efc84 100644
--- a/libavcodec/g723_1enc.c
+++ b/libavcodec/g723_1enc.c
@@ -1256,4 +1256,5 @@ const AVCodec ff_g723_1_encoder = {
     .sample_fmts    = (const enum AVSampleFormat[]) {
         AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE
     },
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
 };