diff --git a/common/timer.c b/common/timer.c
index 1e4b1911e2..da3feff404 100644
--- a/common/timer.c
+++ b/common/timer.c
@@ -275,6 +275,11 @@ DECLARE_CONSOLE_COMMAND(waitms, command_wait,
 #endif
 
 #ifdef CONFIG_CMD_FORCETIME
+/*
+ * Force the hwtimer to a given time. This may have undesired consequences,
+ * especially when going "backward" in time, because task deadlines are
+ * left un-adjusted.
+ */
 static int command_force_time(int argc, char **argv)
 {
 	char *e;