diff --git a/scripts/build.bat b/scripts/build.bat
index 8cea3f2..47cd049 100644
--- a/scripts/build.bat
+++ b/scripts/build.bat
@@ -2,17 +2,18 @@ set CONFIG=%1%
 set "VSCMD_START_DIR=%CD%"
 call "c:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvarsall.bat" x86_x64 10.0 -vcvars_ver=14.2
 MSBuild ..\irpmon.sln /m /Property:Configuration=%CONFIG% /Property:Platform=Win32
-if errorlevel 1 goto failure
+if %errorlevel% NEQ 0 goto failure
 MSBuild ..\irpmon.sln /m /Property:Configuration=%CONFIG% /Property:Platform=x64
-if errorlevel 1 goto failure
+if %errorlevel% NEQ 0 goto failure
 call rsvars
+if %errorlevel% NEQ 0 goto failure
 MSBuild ../gui/irpmon.dproj /m /t:Build /p:config=%CONFIG% /p:platform=Win32
-if errorlevel 1 goto failure
+if %errorlevel% NEQ 0 goto failure
 MSBuild ../gui/irpmon.dproj /m /t:Build /p:config=%CONFIG% /p:platform=Win64
-if errorlevel 1 goto failure
+if %errorlevel% NEQ 0 goto failure
 goto success
 :failure
-echo BUILD FAILED!
+echo BUILD FAILED! Error code %errorlevel%
 :success