diff --git a/src/runtime/memory.cpp b/src/runtime/memory.cpp
index e80718a42..0fc26619b 100644
--- a/src/runtime/memory.cpp
+++ b/src/runtime/memory.cpp
@@ -330,7 +330,7 @@ void WasmMemoryAllocator::mprotectReadWriteWasmMemoryData(
     }
   }
   if (0 !=
-      ::mprotect(Data.MemoryData, Data.MemorySize, PROT_WRITE | PROT_WRITE)) {
+      ::mprotect(Data.MemoryData, Data.MemorySize, PROT_READ | PROT_WRITE)) {
     ZEN_ABORT();
   }
 }