diff --git a/cpp/QrCode.hpp b/cpp/QrCode.hpp
index e868014..14a3f61 100644
--- a/cpp/QrCode.hpp
+++ b/cpp/QrCode.hpp
@@ -280,7 +280,7 @@ class QrCode final {
 		 * Creates a Reed-Solomon ECC generator for the given degree. This could be implemented
 		 * as a lookup table over all possible parameter values, instead of as an algorithm.
 		 */
-		public: ReedSolomonGenerator(int degree);
+		public: explicit ReedSolomonGenerator(int degree);
 		
 		
 		/*-- Method --*/
diff --git a/cpp/QrCodeGeneratorWorker.cpp b/cpp/QrCodeGeneratorWorker.cpp
index d00b03c..2e14607 100644
--- a/cpp/QrCodeGeneratorWorker.cpp
+++ b/cpp/QrCodeGeneratorWorker.cpp
@@ -60,7 +60,7 @@ int main() {
 		for (int i = 0; i < length; i++) {
 			int b;
 			std::cin >> b;
-			data.push_back((uint8_t)b);
+			data.push_back(static_cast<uint8_t>(b));
 			isAscii &= 0 < b && b < 128;
 		}
 		
diff --git a/cpp/QrSegment.hpp b/cpp/QrSegment.hpp
index 779f063..2b9eb66 100644
--- a/cpp/QrSegment.hpp
+++ b/cpp/QrSegment.hpp
@@ -147,7 +147,7 @@ class QrSegment final {
 	private: std::vector<bool> data;
 	
 	
-	/*---- Constructor ----*/
+	/*---- Constructors ----*/
 	
 	/* 
 	 * Creates a new QR Code data segment with the given parameters and data.