diff --git a/tests/src/mocks/report_mock.hpp b/tests/src/mocks/report_mock.hpp
index 6a6e259..758290c 100644
--- a/tests/src/mocks/report_mock.hpp
+++ b/tests/src/mocks/report_mock.hpp
@@ -7,7 +7,7 @@
 class ReportMock : public interfaces::Report
 {
   public:
-    ReportMock(const std::string& id)
+    explicit ReportMock(const std::string& id)
     {
         using namespace testing;
 
diff --git a/tests/src/mocks/trigger_mock.hpp b/tests/src/mocks/trigger_mock.hpp
index be40a65..cd0e5f4 100644
--- a/tests/src/mocks/trigger_mock.hpp
+++ b/tests/src/mocks/trigger_mock.hpp
@@ -7,7 +7,7 @@
 class TriggerMock : public interfaces::Trigger
 {
   public:
-    TriggerMock(std::string id)
+    explicit TriggerMock(std::string id)
     {
         using namespace testing;