diff --git a/CMakeLists.txt b/CMakeLists.txt
index 068c6bb..84fa624 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -215,7 +215,7 @@ if(MSVC)
     # With /W4 VS2015 (V19.0) issues many warnings that VS2017 & 2019 don't
     # so only increase warning level for recent versions.
     add_compile_options($<$<VERSION_GREATER_EQUAL:${CMAKE_CXX_COMPILER_VERSION},19.16>:/W4>)
-    add_compile_options( $<IF:$<CONFIG:Debug>,/Gz,/O2> )
+    add_compile_options( $<IF:$<CONFIG:Debug>,,/O2> )
 elseif(${CMAKE_CXX_COMPILER_ID} STREQUAL "GNU"
        OR ${CMAKE_CXX_COMPILER_ID} MATCHES "Clang")
     add_compile_options(-Wall -Wextra)
@@ -801,6 +801,7 @@ if(EMSCRIPTEN)
 endif()
 
 add_library( objUtil STATIC
+    EXCLUDE_FROM_ALL
     utils/argparser.cpp
     utils/argparser.h
     utils/ktxapp.h