diff --git a/external/ircolib/types.hpp b/external/ircolib/types.hpp
index 396a74c..c3e0c41 100644
--- a/external/ircolib/types.hpp
+++ b/external/ircolib/types.hpp
@@ -30,6 +30,11 @@ template <typename T>
 inline void set_bit(T &val, const std::size_t &bit) {
     val |= 1 << bit;
 }
+
+template <typename T>
+inline void clear_bit(T &val, const std::size_t &bit) {
+    val &= ~(1 << bit);
+}
 } // namespace ircolib
 
 constexpr ircolib::u32 operator""_kib(const unsigned long long v) { return v * 1024; }