diff --git a/build-stack b/build-stack
index bd58672..f53ed81 100755
--- a/build-stack
+++ b/build-stack
@@ -68,7 +68,7 @@ function fetch_as () {
     fi
     echo "--- Downloading.. $2"
     if uname -a | grep --silent arwin ; then
-        curl -L -o $1 $2 || curl -L -k -o $1 $2
+        curl -f -L -o $1 $2 || curl -f -L -k -o $1 $2
     else
         wget --no-check-certificate -O $1 $2
     fi