diff --git a/firmware/drivers/lcd-player.c b/firmware/drivers/lcd-player.c
index 464c872d97..a19d83abe0 100644
--- a/firmware/drivers/lcd-player.c
+++ b/firmware/drivers/lcd-player.c
@@ -169,7 +169,7 @@ static int lcd_get_free_pat(int ch)
 
 }
 
-void xlcd_update()
+void xlcd_update(void)
 {
     int x, y;
     for (x=0; x<11; x++) {
@@ -308,7 +308,7 @@ void lcd_putc(int x, int y, unsigned short ch)
       xlcd_update();
 }
 
-unsigned char lcd_get_locked_pattern()
+unsigned char lcd_get_locked_pattern(void)
 {
     unsigned char pat=1;
     while (pat<LAST_RESERVED_CHAR) {
diff --git a/firmware/drivers/lcd.h b/firmware/drivers/lcd.h
index 7129e5dc69..bd993387b6 100644
--- a/firmware/drivers/lcd.h
+++ b/firmware/drivers/lcd.h
@@ -85,7 +85,7 @@ enum
 extern void lcd_define_hw_pattern (int which,char *pattern,int length);
 extern void lcd_define_pattern (int which,char *pattern);
 extern void lcd_double_height (bool on);
-unsigned char lcd_get_locked_pattern();
+unsigned char lcd_get_locked_pattern(void);
 void lcd_unlock_pattern(unsigned char pat);
 
 #endif