diff --git a/builds/install/arch-specific/win32/BuildExecutableInstall.bat b/builds/install/arch-specific/win32/BuildExecutableInstall.bat
index 095c01c752..cf598d8798 100644
--- a/builds/install/arch-specific/win32/BuildExecutableInstall.bat
+++ b/builds/install/arch-specific/win32/BuildExecutableInstall.bat
@@ -392,6 +392,7 @@ setlocal
 set OUTPATH=%FB_OUTPUT_DIR%\include
 @copy %FB_ROOT_PATH%\src\yvalve\perf.h %OUTPATH%\ > nul
 @copy %FB_ROOT_PATH%\src\include\gen\firebird.pas %OUTPATH%\firebird\ > nul || (@call :ERROR Failure executing copy %FB_ROOT_PATH%\src\include\gen\firebird.pas %OUTPATH%\firebird\ )
+@if %ERRLEV% GEQ 1 goto :END
 @xcopy /e /i /y %FB_ROOT_PATH%\src\include\firebird\impl %OUTPATH%\firebird\  > nul || (@call :ERROR Failure executing @xcopy /e /i /y %FB_ROOT_PATH%\src\include\firebird\* %OUTPATH%\firebird\ )
 @if %ERRLEV% GEQ 1 goto :END