diff --git a/libavcodec/ac3enc.c b/libavcodec/ac3enc.c
index c13c50bbaf..9bc22bede4 100644
--- a/libavcodec/ac3enc.c
+++ b/libavcodec/ac3enc.c
@@ -2479,7 +2479,6 @@ av_cold int ff_ac3_encode_init(AVCodecContext *avctx)
         goto init_fail;
 
     ff_dsputil_init(&s->dsp, avctx);
-    avpriv_float_dsp_init(&s->fdsp, avctx->flags & CODEC_FLAG_BITEXACT);
     ff_ac3dsp_init(&s->ac3dsp, avctx->flags & CODEC_FLAG_BITEXACT);
 
     dprint_options(s);
diff --git a/libavcodec/ac3enc.h b/libavcodec/ac3enc.h
index 94312ba46f..13490340b3 100644
--- a/libavcodec/ac3enc.h
+++ b/libavcodec/ac3enc.h
@@ -266,6 +266,7 @@ typedef struct AC3EncodeContext {
 extern const uint64_t ff_ac3_channel_layouts[19];
 
 int ff_ac3_encode_init(AVCodecContext *avctx);
+int ff_ac3_float_encode_init(AVCodecContext *avctx);
 
 int ff_ac3_encode_close(AVCodecContext *avctx);
 
diff --git a/libavcodec/ac3enc_float.c b/libavcodec/ac3enc_float.c
index 85ff66344e..fca95b1819 100644
--- a/libavcodec/ac3enc_float.c
+++ b/libavcodec/ac3enc_float.c
@@ -134,6 +134,12 @@ static CoefType calc_cpl_coord(CoefSumType energy_ch, CoefSumType energy_cpl)
     return FFMIN(coord, COEF_MAX);
 }
 
+av_cold int ff_ac3_float_encode_init(AVCodecContext *avctx)
+{
+    AC3EncodeContext *s = avctx->priv_data;
+    avpriv_float_dsp_init(&s->fdsp, avctx->flags & CODEC_FLAG_BITEXACT);
+    return ff_ac3_encode_init(avctx);
+}
 
 AVCodec ff_ac3_encoder = {
     .name            = "ac3",
@@ -141,7 +147,7 @@ AVCodec ff_ac3_encoder = {
     .type            = AVMEDIA_TYPE_AUDIO,
     .id              = AV_CODEC_ID_AC3,
     .priv_data_size  = sizeof(AC3EncodeContext),
-    .init            = ff_ac3_encode_init,
+    .init            = ff_ac3_float_encode_init,
     .encode2         = ff_ac3_float_encode_frame,
     .close           = ff_ac3_encode_close,
     .sample_fmts     = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_FLTP,
diff --git a/libavcodec/eac3enc.c b/libavcodec/eac3enc.c
index 951122d80d..e1d61f68bf 100644
--- a/libavcodec/eac3enc.c
+++ b/libavcodec/eac3enc.c
@@ -257,7 +257,7 @@ AVCodec ff_eac3_encoder = {
     .type            = AVMEDIA_TYPE_AUDIO,
     .id              = AV_CODEC_ID_EAC3,
     .priv_data_size  = sizeof(AC3EncodeContext),
-    .init            = ff_ac3_encode_init,
+    .init            = ff_ac3_float_encode_init,
     .encode2         = ff_ac3_float_encode_frame,
     .close           = ff_ac3_encode_close,
     .sample_fmts     = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_FLTP,