diff --git a/scripts/windows/conda-toolchain.cmake b/scripts/windows/conda-toolchain.cmake
index f3ae972030..08a5344dd0 100644
--- a/scripts/windows/conda-toolchain.cmake
+++ b/scripts/windows/conda-toolchain.cmake
@@ -16,10 +16,10 @@ endif()
 
 # Set the C++ compiler and tools.
 if(NOT CMAKE_C_COMPILER)
-    find_program(CMAKE_C_COMPILER NAMES clang-cl REQUIRED DOC "Clang C Compiler (MSVC Compatible)")
+    find_program(CMAKE_C_COMPILER NAMES clang REQUIRED DOC "Clang C Compiler (MSVC Compatible)")
 endif()
 if(NOT CMAKE_CXX_COMPILER)
-    find_program(CMAKE_CXX_COMPILER NAMES clang-cl REQUIRED DOC "Clang C++ Compiler (MSVC Compatible)")
+    find_program(CMAKE_CXX_COMPILER NAMES clang REQUIRED DOC "Clang C++ Compiler (MSVC Compatible)")
 endif()
 if(NOT CMAKE_RC_COMPILER)
     find_program(CMAKE_RC_COMPILER NAMES llvm-rc REQUIRED DOC "LLVM Resource Compiler")
@@ -34,9 +34,9 @@ endif()
 if(EXISTS $ENV{CONDA_PREFIX}/xwin)
     cmake_path(CONVERT "$ENV{CONDA_PREFIX}\\xwin" TO_CMAKE_PATH_LIST XWIN_PREFIX)
 
-    set(CMAKE_C_FLAGS_INIT "/winsysroot ${XWIN_PREFIX} -fuse-ld=lld-link")
-    set(CMAKE_CXX_FLAGS_INIT "/winsysroot ${XWIN_PREFIX} -fuse-ld=lld-link")
-    set(CMAKE_RC_FLAGS_INIT "/winsysroot ${XWIN_PREFIX} -fuse-ld=lld-link")
+    set(CMAKE_C_FLAGS_INIT "--sysroot  ${XWIN_PREFIX} -fuse-ld=lld-link")
+    set(CMAKE_CXX_FLAGS_INIT "--sysroot  ${XWIN_PREFIX} -fuse-ld=lld-link")
+    set(CMAKE_RC_FLAGS_INIT "--sysroot  ${XWIN_PREFIX} -fuse-ld=lld-link")
     set(CMAKE_LINKER ${CMAKE_CURRENT_LIST_DIR}/xwin-link.bat CACHE FILEPATH "LLD Linker for the Xwin SDK")
 elseif(NOT CMAKE_LINKER)
     find_program(CMAKE_LINKER NAMES lld-link REQUIRED DOC "LLD Linker (MSVC Compatible)")