diff --git a/src/core/memory.cpp b/src/core/memory.cpp
index 28d30eee29..3fed514008 100644
--- a/src/core/memory.cpp
+++ b/src/core/memory.cpp
@@ -322,7 +322,7 @@ struct Memory::Impl {
         }
 
         if (Settings::IsFastmemEnabled()) {
-            const bool is_read_enable = Settings::IsGPULevelHigh() || !cached;
+            const bool is_read_enable = !Settings::IsGPULevelExtreme() || !cached;
             system.DeviceMemory().buffer.Protect(vaddr, size, is_read_enable, !cached);
         }