diff --git a/CMakeLists.txt b/CMakeLists.txt
index aa5930287..42fa1fde7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,6 +7,7 @@
 cmake_minimum_required(VERSION 3.15...3.27)
 
 # set preference for clang compiler and intel compiler over gcc and other compilers
+if(0)
 include(Platform/${CMAKE_SYSTEM_NAME}-Determine-C OPTIONAL)
 include(Platform/${CMAKE_SYSTEM_NAME}-C OPTIONAL)
 set(CMAKE_C_COMPILER_NAMES clang icc cc ${CMAKE_C_COMPILER_NAMES})
@@ -14,6 +15,7 @@ set(CMAKE_C_COMPILER_NAMES clang icc cc ${CMAKE_C_COMPILER_NAMES})
 include(Platform/${CMAKE_SYSTEM_NAME}-Determine-CXX OPTIONAL)
 include(Platform/${CMAKE_SYSTEM_NAME}-CXX OPTIONAL)
 set(CMAKE_CXX_COMPILER_NAMES clang++ icpc c++ ${CMAKE_CXX_COMPILER_NAMES})
+endif()
 
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
 
@@ -246,6 +248,7 @@ if(MSVC)
             unsigned long y;
             _BitScanReverse(&y, x);
             _BitScanReverse64(&x, y);
+            __popcnt64(x);
             return 0;
         }"
     HIGHS_HAVE_BITSCAN_REVERSE)