diff --git a/src/server.hpp b/src/server.hpp
index 77a9576..ddb887b 100644
--- a/src/server.hpp
+++ b/src/server.hpp
@@ -26,7 +26,7 @@ class DataFeed: public QObject {
 		std::unique_ptr<QIODevice> m_dev;
 
 	public:
-		DataFeed(QIODevice *dev, bool skipInit = false);
+		explicit DataFeed(QIODevice *dev, bool skipInit = false);
 
 		const QSharedPointer<ProcessData> &procData();
 
diff --git a/src/traceview.hpp b/src/traceview.hpp
index 0eff0df..a52451c 100644
--- a/src/traceview.hpp
+++ b/src/traceview.hpp
@@ -32,7 +32,7 @@ class TraceView: public QWidget {
 		TraceEventModel *m_model = nullptr;
 
 	public:
-		TraceView(QWidget *parent = nullptr);
+		explicit TraceView(QWidget *parent = nullptr);
 
 		~TraceView() override;