diff --git a/src/vm.c b/src/vm.c
index f6cf2baa1..358d34e64 100644
--- a/src/vm.c
+++ b/src/vm.c
@@ -27,6 +27,15 @@
 extern "C" {
 #endif
 void abort(void);
+#if defined(__cplusplus)
+}  /* extern "C" { */
+#endif
+#endif
+
+#if defined(__cplusplus)
+# if !defined(MRB_USE_CXX_ABI)
+extern "C" {
+# endif
 #endif
 
 #define STACK_INIT_SIZE 128