diff --git a/src/analyzer/protocol/quic/decrypt_crypto.cc b/src/analyzer/protocol/quic/decrypt_crypto.cc
index d38bc4154f..693f77fdcc 100644
--- a/src/analyzer/protocol/quic/decrypt_crypto.cc
+++ b/src/analyzer/protocol/quic/decrypt_crypto.cc
@@ -60,7 +60,6 @@ const size_t AEAD_IV_LEN = 12;
 const size_t AEAD_HP_LEN = 16;
 const size_t AEAD_SAMPLE_LENGTH = 16;
 const size_t AEAD_TAG_LENGTH = 16;
-const size_t MAXIMUM_PACKET_LENGTH = 1500;
 const size_t MAXIMUM_PACKET_NUMBER_LENGTH = 4;
 
 EVP_CIPHER_CTX* get_aes_128_ecb() {
@@ -173,7 +172,8 @@ hilti::rt::Bytes decrypt(const std::vector<uint8_t>& client_key, const hilti::rt
     const void* tag_to_check = all_data.data() + decryptInfo.unprotected_header.size() + encrypted_payload_size;
     int tag_to_check_length = AEAD_TAG_LENGTH;
 
-    std::array<uint8_t, MAXIMUM_PACKET_LENGTH> decrypt_buffer;
+    // Allocate memory for decryption.
+    std::vector<uint8_t> decrypt_buffer(encrypted_payload_size);
 
     // Setup context
     auto* ctx = get_aes_128_gcm();