diff --git a/drivers/lcd/memlcd.c b/drivers/lcd/memlcd.c
index 85a1678f84..a7b192acae 100644
--- a/drivers/lcd/memlcd.c
+++ b/drivers/lcd/memlcd.c
@@ -376,7 +376,7 @@ static inline void memlcd_clear(FAR struct memlcd_dev_s *mlcd)
  *
  ****************************************************************************/
 
-static int memlcd_extcominisr(int irq, FAR void *context)
+static int memlcd_extcominisr(int irq, FAR void *context, void *arg)
 {
   static bool pol = 0;
   struct memlcd_dev_s *mlcd = &g_memlcddev;
@@ -723,7 +723,7 @@ FAR struct lcd_dev_s *memlcd_initialize(FAR struct spi_dev_s *spi,
   mlcd->priv = priv;
   mlcd->spi = spi;
 
-  mlcd->priv->attachirq(memlcd_extcominisr);
+  mlcd->priv->attachirq(memlcd_extcominisr, mlcd);
 
   lcdinfo("done\n");
   return &mlcd->dev;
diff --git a/include/nuttx/lcd/memlcd.h b/include/nuttx/lcd/memlcd.h
index afdc7bf3bd..8d892bdf59 100644
--- a/include/nuttx/lcd/memlcd.h
+++ b/include/nuttx/lcd/memlcd.h
@@ -81,7 +81,7 @@ struct memlcd_priv_s
    * setvcomfreq - Set timer frequency for EXTCOMIN.
    */
 
-  int (*attachirq) (xcpt_t isr);
+  int (*attachirq) (xcpt_t isr, void *arg);
   void (*dispcontrol) (bool on);
 #ifndef CONFIG_MEMLCD_EXTCOMIN_MODE_HW
   void (*setpolarity) (bool pol);