1 files changed, 1 insertions, 1 deletions

diff --git a/mkspecs/win32-msvc/qmake.conf b/mkspecs/win32-msvc/qmake.conf
index f3be273..3a6e650 100644
--- a/mkspecs/win32-msvc/qmake.conf
+++ b/mkspecs/win32-msvc/qmake.conf
@@ -8,33 +8,33 @@ MAKEFILE_GENERATOR	= MSVC
         TEMPLATE        = app
         CONFIG          += qt warn_on release incremental flat
         DEFINES                 += UNICODE
 
 exists( $(QTDIR)\.qtwinconfig ) {
         include( $(QTDIR)\.qtwinconfig )
 }
 
         QMAKE_CC        = cl
         QMAKE_LEX       = flex
         QMAKE_LEXFLAGS  = 
         QMAKE_YACC      = byacc
         QMAKE_YACCFLAGS         = -d
         QMAKE_CFLAGS    = -nologo -Zm200 $(CFLAGS_EXTRA)
         QMAKE_CFLAGS_WARN_ON= -W3
         QMAKE_CFLAGS_WARN_OFF= -W0
-        QMAKE_CFLAGS_RELEASE= -O1
+        QMAKE_CFLAGS_RELEASE= $(if $(CFLAGS_RELEASE),$(CFLAGS_RELEASE), -O1)
         QMAKE_CFLAGS_DEBUG= -Zi
         QMAKE_CFLAGS_MT         = -MD
         QMAKE_CFLAGS_MT_DBG= -MDd
         QMAKE_CFLAGS_MT_DLL= -MD
         QMAKE_CFLAGS_MT_DLLDBG= -MDd
         QMAKE_CFLAGS_YACC=
 
 contains(CONFIG,stl){
                 QMAKE_CFLAGS+= -GX $(CFLAGS_EXTRA)
 }
 contains(CONFIG,exceptions){
         QMAKE_CFLAGS += -GX
 }
 contains(CONFIG,rtti){
                 QMAKE_CFLAGS+= -GR $(CFLAGS_EXTRA)
 }