diff --git a/bin/modules/prompt.cmd b/bin/modules/prompt.cmd
index f5a944c..19f5d1d 100644
--- a/bin/modules/prompt.cmd
+++ b/bin/modules/prompt.cmd
@@ -1,6 +1,6 @@
 @IF NOT defined cimode set cimode=0
 @if %cimode% EQU 0 set /p %1=%~2
-@if %cimode% EQU 0 echo.
 @setlocal ENABLEDELAYEDEXPANSION
 @if %cimode% EQU 1 IF NOT "!%1!"=="" echo %~2!%1!
-@if %cimode% EQU 1 IF NOT "!%1!"=="" echo.
\ No newline at end of file
+@if %cimode% EQU 1 IF "!%1!"=="" echo WARNING: Variable '%1' is undefined in CI build configuration script.
+@echo.