diff --git a/benchmark/drop_caches.sh b/benchmark/drop_caches.sh
index 10da129e6..4b472eb84 100755
--- a/benchmark/drop_caches.sh
+++ b/benchmark/drop_caches.sh
@@ -7,11 +7,11 @@ while [ ! 0 -eq ${#oscs[@]} ]; do
     echo 3 > /proc/sys/vm/drop_caches 
 
     for i in ${!oscs[@]}; do
-        fillstat=$( grep -h used_mb ${oscs[$i]}/osc_cached_mb | cut -d" " -f 2 )
-        if [ 0 == $fillstat ]; then
+        used_mb=$( grep -h used_mb ${oscs[$i]}/osc_cached_mb | cut -d" " -f 2 )
+        if [ 0 == $used_mb ]; then
             unset oscs[$i]
         else
-            echo "skip ${oscs[$i]} $fillstat"
+            echo "skip ${oscs[$i]} $used_mb"
         fi
     done
     sleep 1