diff --git a/src/core/sal/bochs/BochsConfig.hpp b/src/core/sal/bochs/BochsConfig.hpp
index 3b46a20c..2dc6a0db 100644
--- a/src/core/sal/bochs/BochsConfig.hpp
+++ b/src/core/sal/bochs/BochsConfig.hpp
@@ -20,6 +20,11 @@ typedef Bit8u*     host_address_t;  //!< the host memory address type
 #endif
 typedef int        timer_t;         //!< type of timer IDs
 
+// 'Publish' 64 bit ability (if enabled in Bochs):
+#if BX_SUPPORT_X86_64
+  #define SIM_SUPPORT_64
+#endif
+
 } // end-of-namespace: fail
 
 #endif // __BOCHS_CONFIG_HPP__