3 files changed, 3 insertions, 3 deletions
diff --git a/src/rpc/mining.cpp b/src/rpc/mining.cpp
index f498b5c8ea..652d886c7e 100644
--- a/src/rpc/mining.cpp
+++ b/src/rpc/mining.cpp
@@ -686,7 +686,7 @@ public:
     bool found;
     CValidationState state;
 
-    submitblock_StateCatcher(const uint256 &hashIn) : hash(hashIn), found(false), state() {}
+    explicit submitblock_StateCatcher(const uint256 &hashIn) : hash(hashIn), found(false), state() {}
 
 protected:
     void BlockChecked(const CBlock& block, const CValidationState& stateIn) override {
diff --git a/src/rpc/misc.cpp b/src/rpc/misc.cpp
index efff4a99ae..1dd660eb8f 100644
--- a/src/rpc/misc.cpp
+++ b/src/rpc/misc.cpp
@@ -125,7 +125,7 @@ class DescribeAddressVisitor : public boost::static_visitor<UniValue>
 public:
     CWallet * const pwallet;
 
-    DescribeAddressVisitor(CWallet *_pwallet) : pwallet(_pwallet) {}
+    explicit DescribeAddressVisitor(CWallet *_pwallet) : pwallet(_pwallet) {}
 
     UniValue operator()(const CNoDestination &dest) const { return UniValue(UniValue::VOBJ); }
 
diff --git a/src/rpc/server.h b/src/rpc/server.h
index dd6f763245..89b1d169d5 100644
--- a/src/rpc/server.h
+++ b/src/rpc/server.h
@@ -31,7 +31,7 @@ namespace RPCServer
 /** Wrapper for UniValue::VType, which includes typeAny:
  * Used to denote don't care type. Only used by RPCTypeCheckObj */
 struct UniValueType {
-    UniValueType(UniValue::VType _type) : typeAny(false), type(_type) {}
+    explicit UniValueType(UniValue::VType _type) : typeAny(false), type(_type) {}
     UniValueType() : typeAny(true) {}
     bool typeAny;
     UniValue::VType type;