diff --git a/src/core/base_bitset_type.hpp b/src/core/base_bitset_type.hpp
index 9ce8528d31..d8254bcd21 100644
--- a/src/core/base_bitset_type.hpp
+++ b/src/core/base_bitset_type.hpp
@@ -108,6 +108,16 @@ public:
 		return static_cast<Timpl&>(*this);
 	}
 
+	/**
+	 * Flip all bits.
+	 * @returns The bit set
+	 */
+	inline constexpr Timpl &Flip()
+	{
+		this->data ^= Tmask;
+		return static_cast<Timpl&>(*this);
+	}
+
 	/**
 	 * Flip the value-th bit.
 	 * @param value Bit to flip.