diff --git a/include/drawglx.h b/include/internal/drawglx.h
similarity index 100%
rename from include/drawglx.h
rename to include/internal/drawglx.h
diff --git a/include/xoverlay.h b/include/xoverlay.h
index 0c1d2cc..365cf22 100644
--- a/include/xoverlay.h
+++ b/include/xoverlay.h
@@ -7,6 +7,11 @@
 
 #pragma once
 
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
 #include <X11/Xlib.h>
 #include <X11/XKBlib.h>
 
@@ -37,6 +42,7 @@ struct xoverlay_library
 extern struct xoverlay_library xoverlay_library;
 
 int xoverlay_init();
+
 void xoverlay_destroy();
 
 void xoverlay_show();
@@ -46,3 +52,7 @@ void xoverlay_hide();
 void xoverlay_draw_begin();
 
 void xoverlay_draw_end();
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/src/drawglx.c b/src/drawglx.c
index 20f9c49..c6c495d 100644
--- a/src/drawglx.c
+++ b/src/drawglx.c
@@ -5,7 +5,7 @@
  *      Author: nullifiedcat
  */
 
-#include "drawglx.h"
+#include "internal/drawglx.h"
 
 #include <GL/glew.h>
 #include <GL/gl.h>
diff --git a/src/xoverlay.c b/src/xoverlay.c
index 3bfd435..c5bbfce 100644
--- a/src/xoverlay.c
+++ b/src/xoverlay.c
@@ -5,7 +5,7 @@
  *      Author: nullifiedcat
  */
 
-#include "drawglx.h"
+#include "internal/drawglx.h"
 
 #include <GL/glx.h>
 #include <X11/extensions/shape.h>