diff --git a/build/rbe/llvm.sh b/build/rbe/llvm.sh
index 7e60059a72b..a5a241434f8 100755
--- a/build/rbe/llvm.sh
+++ b/build/rbe/llvm.sh
@@ -1,5 +1,6 @@
 #!/bin/sh
 os=$(uname -s | tr '[A-Z]' '[a-z'])
 arch=$(uname -m | tr '[A-Z]' '[a-z'] | sed -E 's/^x86_64$/x64/')
+rm -f "$1"
 cp "../../buildtools/$os-$arch/clang/bin/llvm" "$1"
 "$@"