diff --git a/libavcodec/pngdec.c b/libavcodec/pngdec.c
index c619e01b15..cee97b321e 100644
--- a/libavcodec/pngdec.c
+++ b/libavcodec/pngdec.c
@@ -30,10 +30,6 @@
 #include "pngdsp.h"
 #include "thread.h"
 
-/* TODO:
- * - add 16 bit depth support
- */
-
 #include <zlib.h>
 
 typedef struct PNGDecContext {
diff --git a/libavcodec/pngenc.c b/libavcodec/pngenc.c
index dc86171690..f7f4752ca8 100644
--- a/libavcodec/pngenc.c
+++ b/libavcodec/pngenc.c
@@ -27,10 +27,6 @@
 #include "libavutil/avassert.h"
 #include "libavutil/opt.h"
 
-/* TODO:
- * - add 2, 4 and 16 bit depth support
- */
-
 #include <zlib.h>
 
 #define IOBUF_SIZE 4096