diff --git a/scripts/irq2nvic_h b/scripts/irq2nvic_h
index 1259864f..f84c88e4 100755
--- a/scripts/irq2nvic_h
+++ b/scripts/irq2nvic_h
@@ -60,8 +60,12 @@ template_nvic_h = '''\
 
     @{{*/
 
+BEGIN_DECLS
+
 {isrprototypes}
 
+END_DECLS
+
 /**@}}*/
 
 #endif /* {includeguard} */