diff --git a/include/ArduinoJson/JsonVariant.hpp b/include/ArduinoJson/JsonVariant.hpp
index 9273c65b..ff39130b 100644
--- a/include/ArduinoJson/JsonVariant.hpp
+++ b/include/ArduinoJson/JsonVariant.hpp
@@ -166,7 +166,7 @@ class JsonVariant : public Internals::JsonPrintable<JsonVariant> {
 
  private:
   // Special constructor used only to create _invalid.
-  JsonVariant(Internals::JsonVariantType type) : _type(type) {}
+  explicit JsonVariant(Internals::JsonVariantType type) : _type(type) {}
 
   // Helper for interger cast operators
   template <typename T>
diff --git a/test/IntegrationTests.cpp b/test/IntegrationTests.cpp
index a8fb6062..908e8430 100644
--- a/test/IntegrationTests.cpp
+++ b/test/IntegrationTests.cpp
@@ -12,7 +12,7 @@
 using namespace ArduinoJson;
 
 class IntegrationTests : public testing::TestWithParam<const char*> {
-  const static size_t MAX_JSON_SIZE = 10000;
+  static const size_t MAX_JSON_SIZE = 10000;
 
  protected:
   virtual void SetUp() {