diff --git a/libavcodec/jpeglsdec.c b/libavcodec/jpeglsdec.c
index df72ca338f..9f7735ecec 100644
--- a/libavcodec/jpeglsdec.c
+++ b/libavcodec/jpeglsdec.c
@@ -28,6 +28,7 @@
 #include "avcodec.h"
 #include "get_bits.h"
 #include "golomb.h"
+#include "internal.h"
 #include "mathops.h"
 #include "mjpeg.h"
 #include "mjpegdec.h"
@@ -396,4 +397,5 @@ AVCodec ff_jpegls_decoder = {
     .close          = ff_mjpeg_decode_end,
     .decode         = ff_mjpeg_decode_frame,
     .capabilities   = CODEC_CAP_DR1,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
 };
diff --git a/libavcodec/mjpegbdec.c b/libavcodec/mjpegbdec.c
index 66cf2d43ce..ef1df9c08d 100644
--- a/libavcodec/mjpegbdec.c
+++ b/libavcodec/mjpegbdec.c
@@ -27,6 +27,7 @@
 #include <inttypes.h>
 
 #include "avcodec.h"
+#include "internal.h"
 #include "mjpeg.h"
 #include "mjpegdec.h"
 
@@ -161,4 +162,5 @@ AVCodec ff_mjpegb_decoder = {
     .close          = ff_mjpeg_decode_end,
     .decode         = mjpegb_decode_frame,
     .capabilities   = CODEC_CAP_DR1,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
 };
diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c
index 3ef9e82aea..82cee48354 100644
--- a/libavcodec/mjpegdec.c
+++ b/libavcodec/mjpegdec.c
@@ -1723,6 +1723,7 @@ AVCodec ff_mjpeg_decoder = {
     .decode         = ff_mjpeg_decode_frame,
     .capabilities   = CODEC_CAP_DR1,
     .priv_class     = &mjpegdec_class,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
 };
 
 AVCodec ff_thp_decoder = {
@@ -1735,4 +1736,5 @@ AVCodec ff_thp_decoder = {
     .close          = ff_mjpeg_decode_end,
     .decode         = ff_mjpeg_decode_frame,
     .capabilities   = CODEC_CAP_DR1,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
 };
diff --git a/libavcodec/mxpegdec.c b/libavcodec/mxpegdec.c
index bfaae34b76..46536981e4 100644
--- a/libavcodec/mxpegdec.c
+++ b/libavcodec/mxpegdec.c
@@ -346,4 +346,5 @@ AVCodec ff_mxpeg_decoder = {
     .close          = mxpeg_decode_end,
     .decode         = mxpeg_decode_frame,
     .capabilities   = CODEC_CAP_DR1,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
 };
diff --git a/libavcodec/sp5xdec.c b/libavcodec/sp5xdec.c
index ca6b9fd6f0..08bdbc097c 100644
--- a/libavcodec/sp5xdec.c
+++ b/libavcodec/sp5xdec.c
@@ -25,6 +25,7 @@
  */
 
 #include "avcodec.h"
+#include "internal.h"
 #include "mjpeg.h"
 #include "mjpegdec.h"
 #include "sp5x.h"
@@ -103,6 +104,7 @@ AVCodec ff_sp5x_decoder = {
     .close          = ff_mjpeg_decode_end,
     .decode         = sp5x_decode_frame,
     .capabilities   = CODEC_CAP_DR1,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
 };
 
 AVCodec ff_amv_decoder = {
@@ -114,4 +116,5 @@ AVCodec ff_amv_decoder = {
     .init           = ff_mjpeg_decode_init,
     .close          = ff_mjpeg_decode_end,
     .decode         = sp5x_decode_frame,
+    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
 };