diff --git a/src/shader_recompiler/ir/passes/constant_propogation_pass.cpp b/src/shader_recompiler/ir/passes/constant_propogation_pass.cpp
index e6fdc680d..13c0246ea 100644
--- a/src/shader_recompiler/ir/passes/constant_propogation_pass.cpp
+++ b/src/shader_recompiler/ir/passes/constant_propogation_pass.cpp
@@ -21,6 +21,8 @@ template <typename T>
         return value.F32();
     } else if constexpr (std::is_same_v<T, u64>) {
         return value.U64();
+    } else if constexpr (std::is_same_v<T, s64>) {
+        return static_cast<s64>(value.U64());
     }
 }