diff --git a/src/backend/Core.hpp b/src/backend/Core.hpp
index e4a0ea2..1dfa342 100644
--- a/src/backend/Core.hpp
+++ b/src/backend/Core.hpp
@@ -19,7 +19,7 @@ struct Core {
         return instance;
     }
 
-    static inline bool IsAddressError(u8 mask, u64 vaddr) {
+    static inline bool IsAddressError(u8 mask, s64 vaddr) {
         auto regs = GetRegs();
         return (!regs.cop0.is64BitAddressing && s32(vaddr) != vaddr) || (vaddr & mask) != 0;
     }