diff --git a/rpcs3/Emu/Cell/lv2/sys_rsx.cpp b/rpcs3/Emu/Cell/lv2/sys_rsx.cpp
index 1e85acafcf..be22bef106 100644
--- a/rpcs3/Emu/Cell/lv2/sys_rsx.cpp
+++ b/rpcs3/Emu/Cell/lv2/sys_rsx.cpp
@@ -614,9 +614,9 @@ error_code sys_rsx_context_attribute(u32 context_id, u32 package_id, u64 a3, u64
 		{
 			vm::reader_lock rlock;
 
-			for (u32 offs = (offset & ~0xfffff); offs <= range.end; offs += 0x100000)
+			for (u32 io = (offset >> 20), end = (range.end >> 20); io <= end; io++)
 			{
-				if (render->iomap_table.io[offs >> 20] == umax)
+				if (render->iomap_table.ea[io] == umax)
 				{
 					return CELL_EINVAL;
 				}