diff --git a/pkcs11/tests/ecdh_sp800_test.c b/pkcs11/tests/ecdh_sp800_test.c
index 32fe5a5f..a322f810 100644
--- a/pkcs11/tests/ecdh_sp800_test.c
+++ b/pkcs11/tests/ecdh_sp800_test.c
@@ -312,7 +312,7 @@ static size_t openssl_derive(CK_ULONG kdf, EVP_PKEY *private_key,
 
 c_free:
   if (len == 0) {
-    free(ecdh_key);
+    free(*ecdh_key);
   }
   EVP_PKEY_CTX_free(ctx);
   if (mdctx != NULL) {