diff --git a/appveyor.yml b/appveyor.yml
index 1594e949..46a3c2f0 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -48,7 +48,8 @@ after_test:
   - set TAG=%APPVEYOR_REPO_TAG_NAME%
   - if "%TAG%" == ""
     set TAG=unstable
-  - 7z a dust3d-%TAG%-%PLATFORM%.zip %APPVEYOR_BUILD_FOLDER%\release\dust3d.pdb
+  - if "%TAG%" == "unstable"
+    7z a dust3d-%TAG%-%PLATFORM%.zip %APPVEYOR_BUILD_FOLDER%\release\dust3d.pdb
   - 7z a dust3d-%TAG%-%PLATFORM%.zip %APPVEYOR_BUILD_FOLDER%\release\dust3d.exe
   - 7z a dust3d-%TAG%-%PLATFORM%.zip %APPVEYOR_BUILD_FOLDER%\CGAL-4.13\build\bin\Release\CGAL-vc140-mt-4.13.dll
   - 7z a dust3d-%TAG%-%PLATFORM%.zip %APPVEYOR_BUILD_FOLDER%\CGAL-4.13\auxiliary\gmp\lib\libgmp-10.dll
diff --git a/dust3d.pro b/dust3d.pro
index ea6ed8eb..b288adcc 100644
--- a/dust3d.pro
+++ b/dust3d.pro
@@ -1,6 +1,5 @@
 QT += core widgets opengl network
 CONFIG += release
-CONFIG += force_debug_info
 DEFINES += NDEBUG
 DEFINES += QT_MESSAGELOGCONTEXT
 RESOURCES += resources.qrc
@@ -48,6 +47,10 @@ macx {
 }
 ##########################################################
 
+win32 {
+	CONFIG += force_debug_info
+}
+
 win32 {
 	RC_FILE = dust3d.rc
 }
@@ -121,7 +124,8 @@ unix:!macx {
 }
 
 win32 {
-	QMAKE_CXXFLAGS += /O2
+	#QMAKE_CXXFLAGS += /O2
+	QMAKE_CXXFLAGS += /Od
 }
 
 include(thirdparty/QtAwesome/QtAwesome/QtAwesome.pri)