diff --git a/lib/xgethostname.h b/lib/xgethostname.h
index 0177a40..5c8c615 100644
--- a/lib/xgethostname.h
+++ b/lib/xgethostname.h
@@ -1 +1,9 @@
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 char *xgethostname (void);
+
+#ifdef __cplusplus
+}
+#endif