diff --git a/tools/block-timings.sh b/tools/block-timings.sh
index 514168dd..5ca4f08a 100755
--- a/tools/block-timings.sh
+++ b/tools/block-timings.sh
@@ -2,6 +2,9 @@
 
 start_height=$1
 count=$2
+target=$3
+deviation=$4
+power=$5
 
 if [ -z "${start_height}" ]; then
   echo
@@ -19,10 +22,6 @@ if [ -z "${start_height}" ]; then
   exit
 fi
 
-target=$3
-deviation=$4
-power=$5
-
 count=${count:=100}
 target=${target:=60000}
 deviation=${deviation:=30000}