diff --git a/contrib/scripts/dumpcerts.sh b/contrib/scripts/dumpcerts.sh
index 2db75a042..700c5cbad 100755
--- a/contrib/scripts/dumpcerts.sh
+++ b/contrib/scripts/dumpcerts.sh
@@ -42,6 +42,18 @@ set -o nounset
 
 USAGE="$(basename "$0") <path to acme> <destination cert directory>"
 
+# Platform variations
+case "$(uname)" in
+	'Linux')
+		# On Linux, -d should always work. --decode does not work with Alpine's busybox-binary
+		CMD_DECODE_BASE64="base64 -d"
+		;;
+	*)
+		# Max OS-X supports --decode and -D, but --decode may be supported by other platforms as well.
+		CMD_DECODE_BASE64="base64 --decode"
+		;;
+esac
+
 # Allow us to exit on a missing jq binary
 exit_jq() {
 	echo "
@@ -149,10 +161,10 @@ for domain in $(jq -r '.DomainsCertificate.Certs[].Certificate.Domain' ${acmefil
 	echo "Extracting cert bundle for ${domain}"
 	cert=$(jq -e -r --arg domain "$domain" '.DomainsCertificate.Certs[].Certificate |
          	select (.Domain == $domain )| .Certificate' ${acmefile}) || bad_acme
-	echo "${cert}" | base64 --decode > "${cdir}/${domain}.crt"
+	echo "${cert}" | ${CMD_DECODE_BASE64} > "${cdir}/${domain}.crt"
 
 	echo "Extracting private key for ${domain}"
 	key=$(jq -e -r --arg domain "$domain" '.DomainsCertificate.Certs[].Certificate |
 		select (.Domain == $domain )| .PrivateKey' ${acmefile}) || bad_acme
-	echo "${key}" | base64 --decode > "${pdir}/${domain}.key"
+	echo "${key}" | ${CMD_DECODE_BASE64} > "${pdir}/${domain}.key"
 done