diff --git a/src/cc/payments.cpp b/src/cc/payments.cpp
index e329ff5bf..17507a80e 100644
--- a/src/cc/payments.cpp
+++ b/src/cc/payments.cpp
@@ -75,36 +75,6 @@
  
 */
 
-// payments cc fix
-#if (defined(WIN32) || defined(WIN64) || defined(_MSC_VER) || defined(_WIN32))
-    #undef mpz_set_si
-    #undef mpz_get_si
-    #define GMP_LIMB_HIGHBIT ((mp_limb_t) 1 << (GMP_LIMB_BITS - 1))
-    #define GMP_NEG_CAST(T,x) (-(int64_t)((T)((x) + 1) - 1))
-
-    int64_t mpz_get_si (const mpz_t u) 
-        {
-        mp_size_t us = u->_mp_size;
-        if (us > 0)
-            return (int64_t) (u->_mp_d[0] & ~GMP_LIMB_HIGHBIT);
-        else if (us < 0)
-            return (int64_t) (- u->_mp_d[0] | GMP_LIMB_HIGHBIT);
-        else
-            return 0;
-    }
-
-    void mpz_set_si (mpz_t r, int64_t x)
-    {
-        if (x >= 0)
-            mpz_set_ui (r, x);
-        else /* (x < 0) */
-        {
-            r->_mp_size = -1;
-            r->_mp_d[0] = GMP_NEG_CAST (uint64_t, x);
-        }
-    }
-#endif
-
 // start of consensus code
 
 CScript EncodePaymentsTxidOpRet(int64_t allocation,std::vector<uint8_t> scriptPubKey,std::vector<uint8_t> destopret)