diff --git a/Configurations/50-win-clang-cl.conf b/Configurations/50-win-clang-cl.conf
index 6ddcc5c21e..baead2cdbe 100644
--- a/Configurations/50-win-clang-cl.conf
+++ b/Configurations/50-win-clang-cl.conf
@@ -11,7 +11,7 @@ my %targets = (
         multilib        => "-arm64",
         asm_arch        => "aarch64",
         AS        => "clang-cl.exe",
-        ASFLAGS   => "/nologo /Zi",
+        ASFLAGS   => "/nologo /Zi --target=arm64-pc-windows-msvc",
         asflags   => "/c",
         asoutflag => "/Fo",
         perlasm_scheme => "win64",