diff --git a/bochs/config.h.in b/bochs/config.h.in
index 3cffc78bd..e550177b7 100644
--- a/bochs/config.h.in
+++ b/bochs/config.h.in
@@ -567,12 +567,16 @@ typedef
 
 #define HAVE_SIGACTION 1
 
+#ifndef __cplusplus
+
 // configure will change the definition of "inline" to the value
 // that the C compiler allows.  It tests the following keywords to
 // see if any is permitted: inline, __inline__, __inline.  If none
 // is permitted, it defines inline to be empty.
 #define inline inline
 
+#endif
+
 // Use BX_CPP_INLINE for all C++ inline functions.  Note that the
 // word "inline" itself may now be redefined by the above #define.
 #define BX_CPP_INLINE inline