diff --git a/tools/target_dec_fuzzer.c b/tools/target_dec_fuzzer.c
index 84c6bab91b..f6181fed78 100644
--- a/tools/target_dec_fuzzer.c
+++ b/tools/target_dec_fuzzer.c
@@ -236,6 +236,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
     case AV_CODEC_ID_DVB_SUBTITLE: av_dict_set_int(&opts, "compute_clut", -2, 0); break;
     case AV_CODEC_ID_DXA:         maxpixels  /= 32;    break;
     case AV_CODEC_ID_DXV:         maxpixels  /= 32;    break;
+    case AV_CODEC_ID_CMV:         maxpixels  /= 256;   break;
     case AV_CODEC_ID_EXR:         maxpixels  /= 1024;  break;
     case AV_CODEC_ID_FFV1:        maxpixels  /= 32;    break;
     case AV_CODEC_ID_FFWAVESYNTH: maxsamples /= 16384; break;