diff --git a/sys/src/9/imx8/lcd.c b/sys/src/9/imx8/lcd.c
index 78549f036..3b39a6c74 100644
--- a/sys/src/9/imx8/lcd.c
+++ b/sys/src/9/imx8/lcd.c
@@ -812,6 +812,12 @@ backlighton(void)
 	gpioout(GPIO_PIN(1, 10), 1);
 }
 
+void
+blankscreen(int blank)
+{
+	gpioout(GPIO_PIN(1, 10), blank == 0);
+}
+
 void
 lcdinit(void)
 {
diff --git a/sys/src/9/imx8/screen.c b/sys/src/9/imx8/screen.c
index 5be30fa79..151b5b0af 100644
--- a/sys/src/9/imx8/screen.c
+++ b/sys/src/9/imx8/screen.c
@@ -178,11 +178,6 @@ setcolor(ulong p, ulong r, ulong g, ulong b)
 	return 0;
 }
 
-void
-blankscreen(int)
-{
-}
-
 static void
 myscreenputs(char *s, int n)
 {