diff --git a/libuavcan/include/uavcan/protocol/data_type_info_provider.hpp b/libuavcan/include/uavcan/protocol/data_type_info_provider.hpp
index eaf1cfe2c3..ba4edc98bc 100644
--- a/libuavcan/include/uavcan/protocol/data_type_info_provider.hpp
+++ b/libuavcan/include/uavcan/protocol/data_type_info_provider.hpp
@@ -38,7 +38,7 @@ class DataTypeInfoProvider : Noncopyable
                                       protocol::GetDataTypeInfo::Response& response);
 
 public:
-    DataTypeInfoProvider(INode& node)
+    explicit DataTypeInfoProvider(INode& node)
         : cats_srv_(node)
         , gdti_srv_(node)
     { }
diff --git a/libuavcan/include/uavcan/protocol/global_time_sync_master.hpp b/libuavcan/include/uavcan/protocol/global_time_sync_master.hpp
index 2ce741bbfc..1e354bc64a 100644
--- a/libuavcan/include/uavcan/protocol/global_time_sync_master.hpp
+++ b/libuavcan/include/uavcan/protocol/global_time_sync_master.hpp
@@ -48,7 +48,7 @@ class GlobalTimeSyncMaster : protected LoopbackFrameListenerBase
     void handleLoopbackFrame(const RxFrame& frame);
 
 public:
-    GlobalTimeSyncMaster(INode& node)
+    explicit GlobalTimeSyncMaster(INode& node)
         : LoopbackFrameListenerBase(node.getDispatcher())
         , node_(node)
         , initialized_(false)
diff --git a/libuavcan/include/uavcan/protocol/global_time_sync_slave.hpp b/libuavcan/include/uavcan/protocol/global_time_sync_slave.hpp
index 3d2615a0b5..7ffef83960 100644
--- a/libuavcan/include/uavcan/protocol/global_time_sync_slave.hpp
+++ b/libuavcan/include/uavcan/protocol/global_time_sync_slave.hpp
@@ -42,7 +42,7 @@ class GlobalTimeSyncSlave : Noncopyable
     void handleGlobalTimeSync(const ReceivedDataStructure<protocol::GlobalTimeSync>& msg);
 
 public:
-    GlobalTimeSyncSlave(INode& node)
+    explicit GlobalTimeSyncSlave(INode& node)
         : sub_(node)
         , state_(Update)
         , prev_iface_index_(0xFF)
diff --git a/libuavcan/include/uavcan/protocol/logger.hpp b/libuavcan/include/uavcan/protocol/logger.hpp
index fccf2b3741..981314d191 100644
--- a/libuavcan/include/uavcan/protocol/logger.hpp
+++ b/libuavcan/include/uavcan/protocol/logger.hpp
@@ -53,7 +53,7 @@ private:
     LogLevel getExternalSinkLevel() const;
 
 public:
-    Logger(INode& node)
+    explicit Logger(INode& node)
         : logmsg_pub_(node)
         , external_sink_(NULL)
     {
diff --git a/libuavcan/include/uavcan/protocol/node_status_provider.hpp b/libuavcan/include/uavcan/protocol/node_status_provider.hpp
index b28d5c5535..dc8bc9ccda 100644
--- a/libuavcan/include/uavcan/protocol/node_status_provider.hpp
+++ b/libuavcan/include/uavcan/protocol/node_status_provider.hpp
@@ -45,7 +45,7 @@ class NodeStatusProvider : private TimerBase
     void handleGetNodeInfoRequest(const protocol::GetNodeInfo::Request&, protocol::GetNodeInfo::Response& rsp);
 
 public:
-    NodeStatusProvider(INode& node)
+    explicit NodeStatusProvider(INode& node)
         : TimerBase(node)
         , creation_timestamp_(node.getMonotonicTime())
         , node_status_pub_(node)
diff --git a/libuavcan/include/uavcan/protocol/panic_broadcaster.hpp b/libuavcan/include/uavcan/protocol/panic_broadcaster.hpp
index a6a3dd657b..f53175b1c8 100644
--- a/libuavcan/include/uavcan/protocol/panic_broadcaster.hpp
+++ b/libuavcan/include/uavcan/protocol/panic_broadcaster.hpp
@@ -21,7 +21,7 @@ class PanicBroadcaster : private TimerBase
     void handleTimerEvent(const TimerEvent&);
 
 public:
-    PanicBroadcaster(INode& node)
+    explicit PanicBroadcaster(INode& node)
         : TimerBase(node)
         , pub_(node)
     {
diff --git a/libuavcan/include/uavcan/protocol/panic_listener.hpp b/libuavcan/include/uavcan/protocol/panic_listener.hpp
index a57189b29b..aa91776e9d 100644
--- a/libuavcan/include/uavcan/protocol/panic_listener.hpp
+++ b/libuavcan/include/uavcan/protocol/panic_listener.hpp
@@ -74,7 +74,7 @@ class PanicListener : Noncopyable
     }
 
 public:
-    PanicListener(INode& node)
+    explicit PanicListener(INode& node)
         : sub_(node)
         , callback_()
         , num_subsequent_msgs_(0)
diff --git a/libuavcan/include/uavcan/protocol/param_server.hpp b/libuavcan/include/uavcan/protocol/param_server.hpp
index 3fb5ff3d4d..aa1c216e85 100644
--- a/libuavcan/include/uavcan/protocol/param_server.hpp
+++ b/libuavcan/include/uavcan/protocol/param_server.hpp
@@ -83,7 +83,7 @@ class ParamServer
                          protocol::param::SaveErase::Response& response);
 
 public:
-    ParamServer(INode& node)
+    explicit ParamServer(INode& node)
         : get_set_srv_(node)
         , save_erase_srv_(node)
         , manager_(NULL)
diff --git a/libuavcan/include/uavcan/protocol/restart_request_server.hpp b/libuavcan/include/uavcan/protocol/restart_request_server.hpp
index fae1eb3c89..3faf497dbd 100644
--- a/libuavcan/include/uavcan/protocol/restart_request_server.hpp
+++ b/libuavcan/include/uavcan/protocol/restart_request_server.hpp
@@ -32,7 +32,7 @@ class RestartRequestServer : Noncopyable
                            protocol::RestartNode::Response& response) const;
 
 public:
-    RestartRequestServer(INode& node)
+    explicit RestartRequestServer(INode& node)
         : srv_(node)
         , handler_(NULL)
     { }