diff --git a/5.15.2/qtbase/mkspecs/common/msvc-desktop.conf b/5.15.2/qtbase/mkspecs/common/msvc-desktop.conf
index f5d12f4..7616bd8 100644
--- a/5.15.2/qtbase/mkspecs/common/msvc-desktop.conf
+++ b/5.15.2/qtbase/mkspecs/common/msvc-desktop.conf
@@ -38,7 +38,7 @@ QMAKE_YACCFLAGS         = -d
 QMAKE_CFLAGS            = -nologo -Zc:wchar_t
 QMAKE_CFLAGS_WARN_ON    = -W3
 QMAKE_CFLAGS_WARN_OFF   = -W0
-QMAKE_CFLAGS_RELEASE    = $$QMAKE_CFLAGS_OPTIMIZE -MD
+QMAKE_CFLAGS_RELEASE    = $$QMAKE_CFLAGS_OPTIMIZE -Zi -MD
 QMAKE_CFLAGS_RELEASE_WITH_DEBUGINFO += $$QMAKE_CFLAGS_OPTIMIZE -Zi -MD
 QMAKE_CFLAGS_DEBUG      = -Zi -MDd
 QMAKE_CFLAGS_YACC       =
@@ -100,7 +100,7 @@ QMAKE_EXTENSION_STATICLIB = lib
 
 QMAKE_LIBS              =
 QMAKE_LIBS_GUI          = gdi32.lib comdlg32.lib oleaut32.lib imm32.lib winmm.lib ws2_32.lib ole32.lib uuid.lib user32.lib advapi32.lib
-QMAKE_LIBS_NETWORK      = ws2_32.lib
+QMAKE_LIBS_NETWORK      = ws2_32.lib user32.lib gdi32.lib
 QMAKE_LIBS_OPENGL       = glu32.lib opengl32.lib gdi32.lib user32.lib
 QMAKE_LIBS_OPENGL_ES2   = gdi32.lib user32.lib
 QMAKE_LIBS_OPENGL_ES2_DEBUG = gdi32.lib user32.lib