diff --git a/build-compiler-rt.sh b/build-compiler-rt.sh
index 38e3cde..277f1f0 100755
--- a/build-compiler-rt.sh
+++ b/build-compiler-rt.sh
@@ -112,7 +112,7 @@ for arch in $ARCHS; do
         -DCMAKE_RANLIB="$PREFIX/bin/llvm-ranlib" \
         -DCMAKE_C_COMPILER_WORKS=1 \
         -DCMAKE_CXX_COMPILER_WORKS=1 \
-        -DCMAKE_C_COMPILER_TARGET=$arch-windows-gnu \
+        -DCMAKE_C_COMPILER_TARGET=$arch-w64-windows-gnu \
         -DCOMPILER_RT_DEFAULT_TARGET_ONLY=TRUE \
         -DCOMPILER_RT_USE_BUILTINS_LIBRARY=TRUE \
         -DCOMPILER_RT_BUILD_BUILTINS=$BUILD_BUILTINS \