diff --git a/src/Ryujinx.HLE/HOS/Kernel/SupervisorCall/Syscall.cs b/src/Ryujinx.HLE/HOS/Kernel/SupervisorCall/Syscall.cs
index 260ff8af3..a58dd2480 100644
--- a/src/Ryujinx.HLE/HOS/Kernel/SupervisorCall/Syscall.cs
+++ b/src/Ryujinx.HLE/HOS/Kernel/SupervisorCall/Syscall.cs
@@ -889,7 +889,7 @@ namespace Ryujinx.HLE.HOS.Kernel.SupervisorCall
         [Svc(1)]
         public Result SetHeapSize([PointerSized] out ulong address, [PointerSized] ulong size)
         {
-            if ((size & 0xfffffffd001fffff) != 0)
+            if ((size & 0xfffffffc001fffff) != 0)
             {
                 address = 0;