diff --git a/mkspecs/win32-clang-msvc/qmake.conf b/mkspecs/win32-clang-msvc/qmake.conf
index 8bbe0105f0..d6f7ad7be7 100644
--- a/mkspecs/win32-clang-msvc/qmake.conf
+++ b/mkspecs/win32-clang-msvc/qmake.conf
@@ -46,6 +46,8 @@ QMAKE_CXXFLAGS_LTCG_FATOBJECTS = $$QMAKE_CFLAGS_LTCG_FATOBJECTS
 # Leave QMAKE_LFLAGS_LTCG empty because lld-link doesn't need any additional parameters
 QMAKE_LFLAGS_LTCG       =
 
+QMAKE_LFLAGS_RELEASE   += /OPT:REF,ICF,LBR
+
 # Precompiled headers are not supported yet by clang
 CONFIG -= precompile_header