diff --git a/uisimulator/tetris.c b/uisimulator/tetris.c
index d0e56b9a81..4f715a08f7 100644
--- a/uisimulator/tetris.c
+++ b/uisimulator/tetris.c
@@ -107,32 +107,32 @@ int rand(int range)
 
 void draw_frame(int fstart_x,int fstop_x,int fstart_y,int fstop_y)
 {
-	lcd_drawline(fstart_x, fstart_y, fstop_x, fstart_y);
-	lcd_drawline(fstart_x, fstop_y, fstop_x, fstop_y);
+    lcd_drawline(fstart_x, fstart_y, fstop_x, fstart_y);
+    lcd_drawline(fstart_x, fstop_y, fstop_x, fstop_y);
 
-	lcd_drawline(fstart_x, fstart_y, fstart_x, fstop_y);
-	lcd_drawline(fstop_x, fstart_y, fstop_x, fstop_y);
+    lcd_drawline(fstart_x, fstart_y, fstart_x, fstop_y);
+    lcd_drawline(fstop_x, fstart_y, fstop_x, fstop_y);
 }
 
 void draw_block(int x,int y,int block,int frame,int clear)
 {
     int i;
     for(i=0;i < 4;i++) {
-		if (clear) 
+        if (clear) 
             lcd_clearpixel(start_x+x+block_data[block][frame][0][i],
                            start_y+y+block_data[block][frame][1][i]);
-		else
+        else
             lcd_drawpixel(start_x+x+block_data[block][frame][0][i],
                           start_y+y+block_data[block][frame][1][i]);
-	}
+    }
 
 /*
-        if ( (clear ? 0 : block+1) ) 
-            lcd_drawpixel(start_x+x+block_data[block][frame][0][i],
-                          start_y+y+block_data[block][frame][1][i]);
-        else
-            lcd_clearpixel(start_x+x+block_data[block][frame][0][i],
-                           start_y+y+block_data[block][frame][1][i]);
+  if ( (clear ? 0 : block+1) ) 
+  lcd_drawpixel(start_x+x+block_data[block][frame][0][i],
+  start_y+y+block_data[block][frame][1][i]);
+  else
+  lcd_clearpixel(start_x+x+block_data[block][frame][0][i],
+  start_y+y+block_data[block][frame][1][i]);
 */
 }