diff --git a/src/driver/pictureviewer/fb_display.cpp b/src/driver/pictureviewer/fb_display.cpp
index 0022c2be7..091d665d3 100644
--- a/src/driver/pictureviewer/fb_display.cpp
+++ b/src/driver/pictureviewer/fb_display.cpp
@@ -33,8 +33,8 @@
 
 static unsigned short red[256], green[256], blue[256];
 static struct fb_cmap map332 = {0, 256, red, green, blue, NULL};
-static unsigned short red_b[256], green_b[256], blue_b[256];
-static struct fb_cmap map_back = {0, 256, red_b, green_b, blue_b, NULL};
+//static unsigned short red_b[256], green_b[256], blue_b[256];
+//static struct fb_cmap map_back = {0, 256, red_b, green_b, blue_b, NULL};
 
 static unsigned char *lfb = 0;