diff --git a/default_recovery_ui.c b/default_recovery_ui.c
index a2e4bea..d4e6204 100644
--- a/default_recovery_ui.c
+++ b/default_recovery_ui.c
@@ -29,11 +29,11 @@
                        "wipe cache partition",
                        NULL };
 
-int device_toggle_display(char* key_pressed, int key_code) {
+int device_toggle_display(volatile char* key_pressed, int key_code) {
     return key_code == KEY_HOME;
 }
 
-int device_reboot_now(char* key_pressed, int key_code) {
+int device_reboot_now(volatile char* key_pressed, int key_code) {
     return 0;
 }