diff --git a/bootstrap.sh b/bootstrap.sh
index 9b02aaff9..0f2297729 100755
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -3,7 +3,7 @@ set -eo pipefail
 export DEBIAN_FRONTEND=noninteractive
 export DOKKU_REPO=${DOKKU_REPO:-"https://github.com/progrium/dokku.git"}
 
-if ! which apt-get &>/dev/null
+if ! command -v apt-get &>/dev/null
 then
   echo "This installation script requires apt-get. For manual installation instructions, consult https://github.com/progrium/dokku ."
   exit 1