diff --git a/screen_ui.cpp b/screen_ui.cpp
index 8376341..be7abca 100644
--- a/screen_ui.cpp
+++ b/screen_ui.cpp
@@ -376,6 +376,7 @@
     text_cols = gr_fb_width() / char_width;
     if (text_cols > kMaxCols - 1) text_cols = kMaxCols - 1;
 
+    backgroundIcon[NONE] = NULL;
     LoadBitmap("icon_installing", &backgroundIcon[INSTALLING_UPDATE]);
     backgroundIcon[ERASING] = backgroundIcon[INSTALLING_UPDATE];
     LoadBitmap("icon_error", &backgroundIcon[ERROR]);