diff --git a/eng/build.sh b/eng/build.sh
index 9c9beb471f1..7c766a227ef 100755
--- a/eng/build.sh
+++ b/eng/build.sh
@@ -392,7 +392,7 @@ while [[ $# > 0 ]]; do
         echo "No cmake args supplied." 1>&2
         exit 1
       fi
-      cmakeargs="${cmakeargs} ${opt} $2"
+      cmakeargs="${cmakeargs} $2"
       shift 2
       ;;