diff --git a/libs/binder/tests/binderLibTest.cpp b/libs/binder/tests/binderLibTest.cpp
index 2dd86ba..99a71bd 100644
--- a/libs/binder/tests/binderLibTest.cpp
+++ b/libs/binder/tests/binderLibTest.cpp
@@ -230,7 +230,7 @@
 {
     public:
         BinderLibTestBundle(void) {}
-        BinderLibTestBundle(const Parcel *source) : m_isValid(false) {
+        explicit BinderLibTestBundle(const Parcel *source) : m_isValid(false) {
             int32_t mark;
             int32_t bundleLen;
             size_t pos;
@@ -941,7 +941,7 @@
 class BinderLibTestService : public BBinder
 {
     public:
-        BinderLibTestService(int32_t id)
+        explicit BinderLibTestService(int32_t id)
             : m_id(id)
             , m_nextServerId(id + 1)
             , m_serverStartRequested(false)
diff --git a/libs/binder/tests/schd-dbg.cpp b/libs/binder/tests/schd-dbg.cpp
index 6cf7f36..ec9534a 100644
--- a/libs/binder/tests/schd-dbg.cpp
+++ b/libs/binder/tests/schd-dbg.cpp
@@ -218,7 +218,7 @@
   uint64_t m_total_time = 0;
   uint64_t m_miss = 0;
   bool tracing;
-  Results(bool _tracing) : tracing(_tracing) {
+  explicit Results(bool _tracing) : tracing(_tracing) {
   }
   inline bool miss_deadline(uint64_t nano) {
     return nano > deadline_us * 1000;