diff --git a/devlib/trace/ftrace.py b/devlib/trace/ftrace.py
index 871cc89..2973e0b 100644
--- a/devlib/trace/ftrace.py
+++ b/devlib/trace/ftrace.py
@@ -101,8 +101,14 @@ class FtraceCollector(TraceCollector):
         if self.automark:
             self.mark_start()
         self.target.execute('{} start {}'.format(self.target_binary, self.event_string), as_root=True)
+        if 'cpufreq' in self.target.modules:
+            self.logger.debug('Trace CPUFreq frequencies')
+            self.target.cpufreq.trace_frequencies()
 
     def stop(self):
+        if 'cpufreq' in self.target.modules:
+            self.logger.debug('Trace CPUFreq frequencies')
+            self.target.cpufreq.trace_frequencies()
         self.stop_time = time.time()
         if self.automark:
             self.mark_stop()