diff --git a/NumberTheory/CRC.hpp b/NumberTheory/CRC.hpp
index 038c27332..65bb0477e 100644
--- a/NumberTheory/CRC.hpp
+++ b/NumberTheory/CRC.hpp
@@ -32,7 +32,7 @@ class CRC16 {
 		inline void set_value(uint16_t value) { value_ = value; }
 
 	private:
-		uint16_t reset_value_, polynomial_;
+		const uint16_t reset_value_, polynomial_;
 		uint16_t value_;
 };