diff --git a/main.h b/main.h
index 6ce6b86a..4c83b32a 100644
--- a/main.h
+++ b/main.h
@@ -123,6 +123,7 @@ FILE *image_file;
 
 #define FAIL_COUNT 10
 #define FAIL_NONE -1
+#define FAIL_UNPLUG 0
 #define FAIL_SOLAR 1
 #define FAIL_DEGRADE 2
 #define FAIL_SHORT 3