diff --git a/tools/target_dec_fuzzer.c b/tools/target_dec_fuzzer.c
index 8ba25b4e8a..6ce90c9cbc 100644
--- a/tools/target_dec_fuzzer.c
+++ b/tools/target_dec_fuzzer.c
@@ -201,7 +201,7 @@ int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
 
     int res = avcodec_open2(ctx, c, NULL);
     if (res < 0) {
-        av_free(ctx);
+        avcodec_free_context(&ctx);
         av_free(parser_avctx);
         av_parser_close(parser);
         return 0; // Failure of avcodec_open2() does not imply that a issue was found