diff --git a/libavcodec/g726.c b/libavcodec/g726.c
index 6b2b8b3706..8c5c0940b8 100644
--- a/libavcodec/g726.c
+++ b/libavcodec/g726.c
@@ -409,6 +409,7 @@ const AVCodec ff_adpcm_g726_encoder = {
                                                      AV_SAMPLE_FMT_NONE },
     .priv_class     = &g726_class,
     .defaults       = defaults,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
 };
 #endif
 
@@ -433,6 +434,7 @@ const AVCodec ff_adpcm_g726le_encoder = {
                                                      AV_SAMPLE_FMT_NONE },
     .priv_class     = &g726le_class,
     .defaults       = defaults,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
 };
 #endif