diff --git a/core/include/esp/gpio_regs.h b/core/include/esp/gpio_regs.h
index cbda14b..7cfcbd1 100644
--- a/core/include/esp/gpio_regs.h
+++ b/core/include/esp/gpio_regs.h
@@ -1,4 +1,4 @@
-/* esp/iomux_regs.h
+/* esp/gpio_regs.h
  *
  * ESP8266 GPIO register definitions
  *