diff --git a/builds/win32/make_all.bat b/builds/win32/make_all.bat
index 084dd752cc..64bf37bd7b 100644
--- a/builds/win32/make_all.bat
+++ b/builds/win32/make_all.bat
@@ -92,7 +92,7 @@ for %%v in (gpre_boot build_msg) do (
 copy %FB_ROOT_PATH%\src\extlib\ib_util.h %FB_OUTPUT_DIR%\include > nul
 copy %FB_ROOT_PATH%\src\jrd\perf.h %FB_OUTPUT_DIR%\include >nul
 copy %FB_ROOT_PATH%\src\include\ibase.h %FB_OUTPUT_DIR%\include > nul
-copy %FB_ROOT_PATH%\src\include\gen\iberror.h %FB_OUTPUT_DIR%\include > nul
+copy %FB_ROOT_PATH%\src\include\iberror.h %FB_OUTPUT_DIR%\include > nul
 
 :: New API headers
 xcopy %FB_ROOT_PATH%\src\include\firebird %FB_OUTPUT_DIR%\include\firebird /e > nul