diff --git a/ShellcodeFluctuation/main.cpp b/ShellcodeFluctuation/main.cpp
index eb2ae82..c9a440d 100644
--- a/ShellcodeFluctuation/main.cpp
+++ b/ShellcodeFluctuation/main.cpp
@@ -166,7 +166,8 @@ bool isShellcodeThread(LPVOID address)
         {
             const DWORD expectedProtection = (g_fluctuate == FluctuateToRW) ? PAGE_READWRITE : PAGE_NOACCESS;
 
-            return ((mbi.Protect & Shellcode_Memory_Protection)
+            return ((mbi.Protect & PAGE_EXECUTE_READ) 
+                || (mbi.Protect & PAGE_EXECUTE_READWRITE)
                 || (mbi.Protect & expectedProtection));
         }
     }