diff --git a/README.md b/README.md
index f2cabc56..b656be47 100644
--- a/README.md
+++ b/README.md
@@ -26,10 +26,10 @@ For automated installs with [Ansible](https://www.ansible.com/), there is the [P
 
 ### Docker
 
-The `node_exporter` is designed to monitor the host system. It's not recommended
-to deploy it as a Docker container because it requires access to the host system.
+The `node_exporter` is designed to monitor the host system. Deploying in containers requires
+extra care in order to avoid monitoring the container itself.
 
-For situations where Docker deployment is needed, some extra flags must be used to allow
+For situations where containerized deployment is needed, some extra flags must be used to allow
 the `node_exporter` access to the host namespaces.
 
 Be aware that any non-root mount points you want to monitor will need to be bind-mounted
diff --git a/collector/cpu_linux.go b/collector/cpu_linux.go
index d158567f..fcbf651b 100644
--- a/collector/cpu_linux.go
+++ b/collector/cpu_linux.go
@@ -205,7 +205,7 @@ func (c *cpuCollector) updateInfo(ch chan<- prometheus.Metric) error {
 
 	cpuFreqEnabled, ok := collectorState["cpufreq"]
 	if !ok || cpuFreqEnabled == nil {
-		level.Debug(c.logger).Log("cpufreq key missing or nil value in collectorState map", err)
+		level.Debug(c.logger).Log("msg", "cpufreq key missing or nil value in collectorState map")
 	} else if !*cpuFreqEnabled {
 		for _, cpu := range info {
 			ch <- prometheus.MustNewConstMetric(c.cpuFrequencyHz,