diff --git a/daemon/daemon.go b/daemon/daemon.go
index 90a2e583f5..43e032d4ef 100644
--- a/daemon/daemon.go
+++ b/daemon/daemon.go
@@ -751,7 +751,7 @@ func NewDaemon(ctx context.Context, config *config.Config, pluginStore *plugin.S
 	}
 
 	// Ensure that we have a correct root key limit for launching containers.
-	if err := ModifyRootKeyLimit(); err != nil {
+	if err := modifyRootKeyLimit(); err != nil {
 		logrus.Warnf("unable to modify root key limit, number of containers could be limited by this quota: %v", err)
 	}
 
diff --git a/daemon/keys.go b/daemon/keys.go
index 946eaaab1c..c5b5df6e2d 100644
--- a/daemon/keys.go
+++ b/daemon/keys.go
@@ -18,10 +18,10 @@ const (
 	rootKeyByteMultiplier = 25
 )
 
-// ModifyRootKeyLimit checks to see if the root key limit is set to
+// modifyRootKeyLimit checks to see if the root key limit is set to
 // at least 1000000 and changes it to that limit along with the maxbytes
 // allocated to the keys at a 25 to 1 multiplier.
-func ModifyRootKeyLimit() error {
+func modifyRootKeyLimit() error {
 	value, err := readRootKeyLimit(rootKeyFile)
 	if err != nil {
 		return err
diff --git a/daemon/keys_unsupported.go b/daemon/keys_unsupported.go
index 2ccdb576d7..3051979392 100644
--- a/daemon/keys_unsupported.go
+++ b/daemon/keys_unsupported.go
@@ -2,7 +2,7 @@
 
 package daemon // import "github.com/docker/docker/daemon"
 
-// ModifyRootKeyLimit is a noop on unsupported platforms.
-func ModifyRootKeyLimit() error {
+// modifyRootKeyLimit is a noop on unsupported platforms.
+func modifyRootKeyLimit() error {
 	return nil
 }