diff --git a/etc/Deployment/_build.bat b/etc/Deployment/_build.bat
index 16489696..7e46ef10 100644
--- a/etc/Deployment/_build.bat
+++ b/etc/Deployment/_build.bat
@@ -8,7 +8,7 @@ call "%~dp0\_paths.bat"
 if not "%LAMEXP_ERROR%"=="0" GOTO:EOF
 REM -----------------------------------------------------------------
 call "%PATH_MSVC90%\VC\bin\vcvars32.bat" x86
-call "%PATH_QTMSVC%\bin\qtvars.bat"
+call "%PATH_QTMSVC%\bin\qtenv2.bat"
 REM -----------------------------------------------------------------
 set "LAMEXP_ERROR=1"
 msbuild.exe /property:Configuration=%2 /property:Platform=Win32 /target:Clean /verbosity:detailed %1
diff --git a/etc/Deployment/_lupdate.bat b/etc/Deployment/_lupdate.bat
index 24892c4b..23bc1e3d 100644
--- a/etc/Deployment/_lupdate.bat
+++ b/etc/Deployment/_lupdate.bat
@@ -7,7 +7,7 @@ call "%~dp0\_paths.bat"
 if not "%LAMEXP_ERROR%"=="0" GOTO:EOF
 REM -----------------------------------------------------------------
 call "%PATH_MSVC90%\VC\bin\vcvars32.bat" x86
-call "%PATH_QTMSVC%\bin\qtvars.bat"
+call "%PATH_QTMSVC%\bin\qtenv2.bat"
 REM -----------------------------------------------------------------
 set "LAMEXP_ERROR=1"
 set "LST_FILE=%TEMP%\~list.%DATE:~6,4%-%DATE:~3,2%-%DATE:~0,2%.lst"
diff --git a/etc/Deployment/_paths.bat b/etc/Deployment/_paths.bat
index 6d98391e..63d46979 100644
--- a/etc/Deployment/_paths.bat
+++ b/etc/Deployment/_paths.bat
@@ -56,7 +56,7 @@ if not exist "%PATH_UPXBIN%\upx.exe" GOTO:EOF
 if not exist "%PATH_MKNSIS%\makensis.exe" GOTO:EOF
 if not exist "%PATH_MSVC90%\VC\vcvarsall.bat" GOTO:EOF
 if not exist "%PATH_MSVC90%\VC\bin\cl.exe" GOTO:EOF
-if not exist "%PATH_QTMSVC%\bin\qtvars.bat" GOTO:EOF
+if not exist "%PATH_QTMSVC%\bin\qtenv2.bat" GOTO:EOF
 if not exist "%PATH_QTMSVC%\bin\uic.exe" GOTO:EOF
 if not exist "%PATH_QTMSVC%\bin\moc.exe" GOTO:EOF
 if not exist "%PATH_QTMSVC%\bin\rcc.exe" GOTO:EOF
diff --git a/src/Config.h b/src/Config.h
index 3b3e3947..940ab495 100644
--- a/src/Config.h
+++ b/src/Config.h
@@ -30,7 +30,7 @@
 #define VER_LAMEXP_MINOR_LO					2
 #define VER_LAMEXP_TYPE						Alpha
 #define VER_LAMEXP_PATCH					4
-#define VER_LAMEXP_BUILD					451
+#define VER_LAMEXP_BUILD					452
 
 ///////////////////////////////////////////////////////////////////////////////
 // Tools versions