1 files changed, 1 insertions, 1 deletions
diff --git a/include/datetime/clock-mock.h b/include/datetime/clock-mock.h
index 0e24377..84fd860 100644
--- a/include/datetime/clock-mock.h
+++ b/include/datetime/clock-mock.h
@@ -36,7 +36,7 @@ namespace datetime {
 class MockClock: public Clock
 {
 public:
-    MockClock(const DateTime& dt): m_localtime(dt) {}
+    explicit MockClock(const DateTime& dt): m_localtime(dt) {}
     ~MockClock() =default;
 
     DateTime localtime() const { return m_localtime; }