diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index ef5b3bd..884030a 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -101,7 +101,7 @@ if(MSVC)
         _WIN32_IE=${_WIN32_WINNT_WIN10} NTDDI_VERSION=${NTDDI_WIN10_CO}
     )
     target_compile_options(${SUB_PROJ_NAME} PRIVATE
-        /utf-8 /W4 /WX
+        /utf-8 /W3 /WX
     )
 else()
     target_compile_options(${SUB_PROJ_NAME} PRIVATE
diff --git a/src/quick/CMakeLists.txt b/src/quick/CMakeLists.txt
index 569255e..1f03fbd 100644
--- a/src/quick/CMakeLists.txt
+++ b/src/quick/CMakeLists.txt
@@ -94,7 +94,7 @@ if(MSVC)
         _WIN32_IE=${_WIN32_WINNT_WIN10} NTDDI_VERSION=${NTDDI_WIN10_CO}
     )
     target_compile_options(${SUB_PROJ_NAME} PRIVATE
-        /utf-8 /W3 /WX # Can't use /W4 here due to the Q_D macro causes warnings.
+        /utf-8 /W3 /WX
     )
 else()
     target_compile_options(${SUB_PROJ_NAME} PRIVATE
diff --git a/src/widgets/CMakeLists.txt b/src/widgets/CMakeLists.txt
index e78a08a..49225c7 100644
--- a/src/widgets/CMakeLists.txt
+++ b/src/widgets/CMakeLists.txt
@@ -80,7 +80,7 @@ target_compile_definitions(${SUB_PROJ_NAME} PRIVATE
 
 if(MSVC)
     target_compile_options(${SUB_PROJ_NAME} PRIVATE
-        /utf-8 /W4 /WX
+        /utf-8 /W3 /WX
     )
 else()
     target_compile_options(${SUB_PROJ_NAME} PRIVATE