diff --git a/include/mtl/fixed.hpp b/include/mtl/fixed.hpp
index f4b708d..8ec057f 100644
--- a/include/mtl/fixed.hpp
+++ b/include/mtl/fixed.hpp
@@ -107,6 +107,12 @@ public:
 	ARM_MODE constexpr fixed operator+(fixed rhs) const {
 		return from_raw(x + rhs.x);
 	}
+	/**
+	 * \brief Fixed point subtraction
+	 */
+	ARM_MODE constexpr fixed operator-(fixed rhs) const {
+		return from_raw(x - rhs.x);
+	}
 
 	/**
 	 * \brief Fixed point multiplication