diff --git a/tools/target_dec_fuzzer.c b/tools/target_dec_fuzzer.c
index 1ecafb9c0c..476103750b 100644
--- a/tools/target_dec_fuzzer.c
+++ b/tools/target_dec_fuzzer.c
@@ -145,6 +145,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
     maxpixels = maxpixels_per_frame * maxiteration;
     maxsamples = maxsamples_per_frame * maxiteration;
     switch (c->id) {
+    case AV_CODEC_ID_AGM:         maxpixels  /= 1024;  break;
     case AV_CODEC_ID_BINKVIDEO:   maxpixels  /= 32;    break;
     case AV_CODEC_ID_CFHD:        maxpixels  /= 128;   break;
     case AV_CODEC_ID_DIRAC:       maxpixels  /= 8192;  break;