diff --git a/fs/procfs/fs_procfscritmon.c b/fs/procfs/fs_procfscritmon.c
index 427e0b8df9..02a92cee38 100644
--- a/fs/procfs/fs_procfscritmon.c
+++ b/fs/procfs/fs_procfscritmon.c
@@ -181,12 +181,10 @@ static ssize_t critmon_read_cpu(FAR struct critmon_file_s *attr,
                                 FAR off_t *offset, int cpu)
 {
   struct timespec maxtime;
-  size_t remaining;
   size_t linesize;
   size_t copysize;
   size_t totalsize;
 
-  remaining = buflen;
   totalsize = 0;
 
   /* Convert the for maximum time pre-emption disabled */
@@ -214,7 +212,6 @@ static ssize_t critmon_read_cpu(FAR struct critmon_file_s *attr,
 
   totalsize += copysize;
   buffer    += copysize;
-  remaining -= copysize;
 
   if (totalsize >= buflen)
     {