diff --git a/testssl.sh b/testssl.sh
index fa167e9..9d72e6e 100755
--- a/testssl.sh
+++ b/testssl.sh
@@ -14550,7 +14550,7 @@ gcm-decrypt() {
      elif [[ "$cipher" == TLS_AES_256_GCM_SHA384 ]] && ! "$compute_tag"; then
           if "$HAS_AES256_GCM"; then
                plaintext="$(hex2binary "$ciphertext" | $OPENSSL enc -aes-256-gcm -K "$key" -iv "$nonce" 2>/dev/null | hexdump -v -e '16/1 "%02X"')"
-               aesgcm_used=true
+               enc_aesgcm_used=true
           elif "$HAS2_AES256_GCM"; then
                # empty  OPENSSL_CONF temporarily as it might cause problems, see #2780
                plaintext="$(hex2binary "$ciphertext" | OPENSSL_CONF='' $OPENSSL2 enc -aes-256-gcm -K "$key" -iv "$nonce" 2>/dev/null | hexdump -v -e '16/1 "%02X"')"