diff --git a/tests/fuzzer/flatbuffers_monster_fuzzer.cc b/tests/fuzzer/flatbuffers_monster_fuzzer.cc
index 5702189ac..1609c71e8 100644
--- a/tests/fuzzer/flatbuffers_monster_fuzzer.cc
+++ b/tests/fuzzer/flatbuffers_monster_fuzzer.cc
@@ -35,7 +35,7 @@ static fs::path exe_path_;
 namespace {
 
 static constexpr size_t kMinInputLength = 1;
-static constexpr size_t kMaxInputLength = 99000;
+static constexpr size_t kMaxInputLength = 16384;
 
 static constexpr uint8_t flags_strict_json = 0x80;
 static constexpr uint8_t flags_skip_unexpected_fields_in_json = 0x40;
diff --git a/tests/fuzzer/flatbuffers_parser_fuzzer.cc b/tests/fuzzer/flatbuffers_parser_fuzzer.cc
index d4bbb0e2f..0b74f2ceb 100644
--- a/tests/fuzzer/flatbuffers_parser_fuzzer.cc
+++ b/tests/fuzzer/flatbuffers_parser_fuzzer.cc
@@ -10,7 +10,7 @@
 #include "test_init.h"
 
 static constexpr size_t kMinInputLength = 1;
-static constexpr size_t kMaxInputLength = 33000;
+static constexpr size_t kMaxInputLength = 16384;
 
 static constexpr uint8_t flags_strict_json = 0x80;
 static constexpr uint8_t flags_skip_unexpected_fields_in_json = 0x40;