diff --git a/PendingReleaseNotes.md b/PendingReleaseNotes.md
index 52fc28d96..df19898bf 100644
--- a/PendingReleaseNotes.md
+++ b/PendingReleaseNotes.md
@@ -12,6 +12,7 @@
 - Rook-Operator no longer creates the resources CRD's or TPR's at the runtime. Instead, those resources are provisioned during deployment via `helm` or `kubectl`.
 - The 'rook' image is now based on the ceph-container project's 'daemon-base' image so that Rook no
   longer has to manage installs of Ceph in image.
+- Rook CRD code generation is now working with BSD (Mac) and GNU sed.
 
 ## Breaking Changes
 
diff --git a/build/codegen/codegen.sh b/build/codegen/codegen.sh
index 874108f63..6169d9ea4 100755
--- a/build/codegen/codegen.sh
+++ b/build/codegen/codegen.sh
@@ -1,6 +1,6 @@
 #!/bin/bash -e
 
-# Copyright 2016 The Rook Authors. All rights reserved.
+# Copyright 2018 The Rook Authors. All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -14,9 +14,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# shellcheck disable=SC2086,SC2089,SC2090
+# Disables quote checks, which is needed because of the SED variable here.
+
 scriptdir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
-cd ${scriptdir}/../../vendor/k8s.io/code-generator && ./generate-groups.sh \
+cd "${scriptdir}/../../vendor/k8s.io/code-generator" && ./generate-groups.sh \
   all \
   github.com/rook/rook/pkg/client \
   github.com/rook/rook/pkg/apis \
@@ -24,9 +27,18 @@ cd ${scriptdir}/../../vendor/k8s.io/code-generator && ./generate-groups.sh \
 # this seems busted in the release-1.8 branch
 #  --go-header-file ${SCRIPT_ROOT}/build/codegen/header.txt
 
+SED="sed -i.bak"
+
 # workaround https://github.com/openshift/origin/issues/10357
-find ${scriptdir}/../../pkg/client -name "clientset_generated.go" -exec sed -i '' 's/fakePtr := testing.Fake{}/cs := \&Clientset{}/g' {} +
-find ${scriptdir}/../../pkg/client -name "clientset_generated.go" -exec sed -i '' 's/fakePtr.AddReactor/cs.Fake.AddReactor/g' {} +
-find ${scriptdir}/../../pkg/client -name "clientset_generated.go" -exec sed -i '' 's/fakePtr.AddWatchReactor/cs.Fake.AddWatchReactor/g' {} +
-find ${scriptdir}/../../pkg/client -name "clientset_generated.go" -exec sed -i '' 's/return &Clientset{fakePtr, \&fakediscovery.FakeDiscovery{Fake: &fakePtr}}/cs.discovery = \&fakediscovery.FakeDiscovery{Fake: \&cs.Fake}\
+find "${scriptdir}/../../pkg/client" -name "clientset_generated.go" -exec \
+    $SED 's/fakePtr := testing.Fake\([{]\)}/cs := \&Clientset\1}/g' {} +
+find "${scriptdir}/../../pkg/client" -name "clientset_generated.go" -exec \
+    $SED 's/fakePtr.AddReactor/cs.Fake.AddReactor/g' {} +
+find "${scriptdir}/../../pkg/client" -name "clientset_generated.go" -exec \
+    $SED 's/fakePtr.AddWatchReactor/cs.Fake.AddWatchReactor/g' {} +
+# shellcheck disable=SC1004
+# Disables backslash+linefeed is literal check.
+find "${scriptdir}/../../pkg/client" -name "clientset_generated.go" -exec \
+    $SED 's/return \&Clientset{fakePtr, \&fakediscovery.FakeDiscovery{Fake: \&fakePtr}}/cs.discovery = \&fakediscovery.FakeDiscovery{Fake: \&cs.Fake}\
 	return cs/g' {} +
+find "${scriptdir}/../../pkg/client" -name "clientset_generated.go.bak" -delete
diff --git a/build/codegen/header.txt b/build/codegen/header.txt
index dbc310344..e8ae8ec8f 100644
--- a/build/codegen/header.txt
+++ b/build/codegen/header.txt
@@ -1,5 +1,5 @@
 /*
-Copyright 2017 The Rook Authors. All rights reserved.
+Copyright 2018 The Rook Authors. All rights reserved.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.