refactor: Improve use of explicit keyword

3 files changed, 3 insertions, 3 deletions

diff --git a/src/test/fuzz/signature_checker.cpp b/src/test/fuzz/signature_checker.cpp
index e121c89665..970452dbcc 100644
--- a/src/test/fuzz/signature_checker.cpp
+++ b/src/test/fuzz/signature_checker.cpp
@@ -24,7 +24,7 @@ class FuzzedSignatureChecker : public BaseSignatureChecker
     FuzzedDataProvider& m_fuzzed_data_provider;
 
 public:
-    FuzzedSignatureChecker(FuzzedDataProvider& fuzzed_data_provider) : m_fuzzed_data_provider(fuzzed_data_provider)
+    explicit FuzzedSignatureChecker(FuzzedDataProvider& fuzzed_data_provider) : m_fuzzed_data_provider(fuzzed_data_provider)
     {
     }
 
diff --git a/src/test/util/logging.h b/src/test/util/logging.h
index 1fcf7ca305..a49f9a7292 100644
--- a/src/test/util/logging.h
+++ b/src/test/util/logging.h
@@ -32,7 +32,7 @@ class DebugLogHelper
     void check_found();
 
 public:
-    DebugLogHelper(std::string message, MatchFn match = [](const std::string*){ return true; });
+    explicit DebugLogHelper(std::string message, MatchFn match = [](const std::string*){ return true; });
     ~DebugLogHelper() { check_found(); }
 };
 
diff --git a/src/test/util_tests.cpp b/src/test/util_tests.cpp
index 36fa1a0299..131508f5f8 100644
--- a/src/test/util_tests.cpp
+++ b/src/test/util_tests.cpp
@@ -231,7 +231,7 @@ public:
         Optional<std::vector<std::string>> list_value;
         const char* error = nullptr;
 
-        Expect(util::SettingsValue s) : setting(std::move(s)) {}
+        explicit Expect(util::SettingsValue s) : setting(std::move(s)) {}
         Expect& DefaultString() { default_string = true; return *this; }
         Expect& DefaultInt() { default_int = true; return *this; }
         Expect& DefaultBool() { default_bool = true; return *this; }