1 files changed, 2 insertions, 2 deletions
diff --git a/src/uint256.h b/src/uint256.h
index a92ce07f11..3ed694d723 100644
--- a/src/uint256.h
+++ b/src/uint256.h
@@ -111,7 +111,7 @@ public:
 class uint160 : public base_blob<160> {
 public:
     uint160() {}
-    uint160(const base_blob<160>& b) : base_blob<160>(b) {}
+    explicit uint160(const base_blob<160>& b) : base_blob<160>(b) {}
     explicit uint160(const std::vector<unsigned char>& vch) : base_blob<160>(vch) {}
 };
 
@@ -123,7 +123,7 @@ public:
 class uint256 : public base_blob<256> {
 public:
     uint256() {}
-    uint256(const base_blob<256>& b) : base_blob<256>(b) {}
+    explicit uint256(const base_blob<256>& b) : base_blob<256>(b) {}
     explicit uint256(const std::vector<unsigned char>& vch) : base_blob<256>(vch) {}
 
     /** A cheap hash function that just returns 64 bits from the result, it can be