diff --git a/configs/stm32f103-minimum/src/stm32f103_minimum.h b/configs/stm32f103-minimum/src/stm32f103_minimum.h
index 17db4be9499..f3159c7eace 100644
--- a/configs/stm32f103-minimum/src/stm32f103_minimum.h
+++ b/configs/stm32f103-minimum/src/stm32f103_minimum.h
@@ -77,10 +77,6 @@
 #  undef HAVE_AT24
 #endif
 
-#ifndef HAVE_AT24
-#error "HAVE_AT24 is not defined!\n"
-#endif
-
 /************************************************************************************
  * Pre-processor Definitions
  ************************************************************************************/
diff --git a/include/nuttx/ioexpander/gpio.h b/include/nuttx/ioexpander/gpio.h
index c0d091753c1..e8a0c44a4d4 100644
--- a/include/nuttx/ioexpander/gpio.h
+++ b/include/nuttx/ioexpander/gpio.h
@@ -1,4 +1,4 @@
-/********************************************************************************************
+/****************************************************************************
  * include/nuttx/ioexpander/gpio.h
  *
  *   Copyright (C) 2016 Gregory Nutt. All rights reserved.
@@ -31,7 +31,7 @@
  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  *
- ********************************************************************************************/
+ ****************************************************************************/
 
 #ifndef __INCLUDE_NUTTX_IOEXPANDER_GPIO_H
 #define __INCLUDE_NUTTX_IOEXPANDER_GPIO_H