diff --git a/random.cpp b/random.cpp
index 02be871..330604f 100644
--- a/random.cpp
+++ b/random.cpp
@@ -29,7 +29,7 @@ Random::Random()
 {
 }
 
-std::vector<char> Random::getRandom(unsigned int bytes)
+std::vector<char> Random::getRandom(unsigned int bytes) const
 {
 	auto buffer = std::make_unique<char[]>(bytes);
 	int r = getrandom(buffer.get(), bytes, GRND_NONBLOCK);
@@ -46,7 +46,7 @@ std::vector<char> Random::getRandom(unsigned int bytes)
 
 }
 
-std::string Random::getRandomHexString(unsigned int bytes)
+std::string Random::getRandomHexString(unsigned int bytes) const
 {
 	std::stringstream stream;
 
diff --git a/random.h b/random.h
index 9954fb2..b826b71 100644
--- a/random.h
+++ b/random.h
@@ -22,8 +22,8 @@ class Random
 {
   public:
 	Random();
-	std::string getRandomHexString(unsigned int bytes);
-	std::vector<char> getRandom(unsigned int bytes);
+	std::string getRandomHexString(unsigned int bytes) const;
+	std::vector<char> getRandom(unsigned int bytes) const;
 };
 
 #endif // RANDOM_H