diff --git a/local/dfm/lib/common.sh b/local/dfm/lib/common.sh
index 0589ed6..ec6e07f 100644
--- a/local/dfm/lib/common.sh
+++ b/local/dfm/lib/common.sh
@@ -12,6 +12,7 @@ declare -A ERROR_CODES=(
   [COMMAND_NOT_FOUND]=2
   [FUNCTION_NOT_FOUND]=3
   [EXECUTION_FAILED]=4
+  [FILE_NOT_FOUND]=5
 )
 
 declare -A LOG_LEVELS=(