diff --git a/libraries/libmesosphere/include/mesosphere/kern_k_capabilities.hpp b/libraries/libmesosphere/include/mesosphere/kern_k_capabilities.hpp
index 6025871be..f9d2d9cc1 100644
--- a/libraries/libmesosphere/include/mesosphere/kern_k_capabilities.hpp
+++ b/libraries/libmesosphere/include/mesosphere/kern_k_capabilities.hpp
@@ -222,7 +222,6 @@ namespace ams::kern {
             }
 
             constexpr bool SetInterruptPermitted(u32 id) {
-                constexpr size_t BitsPerWord = BITSIZEOF(m_irq_access_flags[0]);
                 if (AMS_LIKELY(id < m_irq_access_flags.GetCount())) {
                     m_irq_access_flags[id] = true;
                     return true;