diff --git a/mkspecs/win32-msvc2012/qmake.conf b/mkspecs/win32-msvc2012/qmake.conf
index 19bd10484b7..253e11b1d2c 100644
--- a/mkspecs/win32-msvc2012/qmake.conf
+++ b/mkspecs/win32-msvc2012/qmake.conf
@@ -5,6 +5,7 @@
 #
 
 MAKEFILE_GENERATOR      = MSBUILD
+QMAKE_PLATFORM          = win32
 CONFIG                 += incremental flat precompile_header autogen_precompile_source debug_and_release debug_and_release_target embed_manifest_dll embed_manifest_exe
 DEFINES                += UNICODE WIN32
 QMAKE_COMPILER_DEFINES += _MSC_VER=1700 _WIN32