diff --git a/src/amount.h b/src/amount.h
--- a/src/amount.h
+++ b/src/amount.h
@@ -18,12 +18,12 @@
 private:
     int64_t amount;
 
-    explicit constexpr Amount(int64_t _amount) : amount(_amount) {}
-
 public:
     constexpr Amount() : amount(0) {}
     constexpr Amount(const Amount &_camount) : amount(_camount.amount) {}
 
+    explicit constexpr Amount(int64_t _amount) : amount(_amount) {}
+
     static constexpr Amount zero() { return Amount(0); }
     static constexpr Amount satoshi() { return Amount(1); }
 
@@ -157,7 +157,7 @@
  * critical; in unusual circumstances like a(nother) overflow bug that allowed
  * for the creation of coins out of thin air modification could lead to a fork.
  */
-static const Amount MAX_MONEY = 21000000 * COIN;
+static constexpr Amount MAX_MONEY = 21000000 * COIN;
 inline bool MoneyRange(const Amount nValue) {
     return nValue >= Amount::zero() && nValue <= MAX_MONEY;
 }