diff --git a/libavdevice/timefilter.c b/libavdevice/timefilter.c
index 2e26b27976..8f52fc5d62 100644
--- a/libavdevice/timefilter.c
+++ b/libavdevice/timefilter.c
@@ -28,8 +28,8 @@
 #include "timefilter.h"
 
 struct TimeFilter {
-    /// Delay Locked Loop data. These variables refer to mathematical
-    /// concepts described in: http://www.kokkinizita.net/papers/usingdll.pdf
+    // Delay Locked Loop data. These variables refer to mathematical
+    // concepts described in: http://www.kokkinizita.net/papers/usingdll.pdf
     double cycle_time;
     double feedback2_factor;
     double feedback3_factor;
@@ -62,15 +62,12 @@ double ff_timefilter_update(TimeFilter *self, double system_time, double period)
 {
     self->count++;
     if (self->count == 1) {
-        /// init loop
         self->cycle_time = system_time;
     } else {
         double loop_error;
         self->cycle_time += self->clock_period * period;
-        /// calculate loop error
         loop_error = system_time - self->cycle_time;
 
-        /// update loop
         self->cycle_time   += FFMAX(self->feedback2_factor, 1.0 / self->count) * loop_error;
         self->clock_period += self->feedback3_factor * loop_error / period;
     }