diff --git a/binding-mri/binding-mri.cpp b/binding-mri/binding-mri.cpp
index ac54a07..7ef69ae 100644
--- a/binding-mri/binding-mri.cpp
+++ b/binding-mri/binding-mri.cpp
@@ -26,8 +26,9 @@
 #include "filesystem.h"
 #include "util.h"
 #include "debugwriter.h"
-
-#include <ruby.h>
+extern "C" {
+    #include <ruby.h>
+}
 #include <ruby/encoding.h>
 
 #include <string>
diff --git a/binding-mri/binding-util.h b/binding-mri/binding-util.h
index 2d1577e..daf9d0e 100644
--- a/binding-mri/binding-util.h
+++ b/binding-mri/binding-util.h
@@ -21,9 +21,9 @@
 
 #ifndef BINDING_UTIL_H
 #define BINDING_UTIL_H
-
-#include <ruby.h>
-
+extern "C" {
+    #include <ruby.h>
+}
 #include "exception.h"
 
 enum RbException