diff --git a/day1/day1p1.sh b/day1/day1p1.sh
index aec4029..9aa759c 100755
--- a/day1/day1p1.sh
+++ b/day1/day1p1.sh
@@ -9,6 +9,6 @@ while read f; do
         echo $SUM + $i
         SUM=$(( $SUM + $i ))
     done
-done < input
+done < "$1"
 
 echo $SUM
diff --git a/day1/day1p2.sh b/day1/day1p2.sh
index 13794e8..583d20c 100755
--- a/day1/day1p2.sh
+++ b/day1/day1p2.sh
@@ -22,6 +22,6 @@ while read f; do
     echo $f: $FIRST$LAST
     SUM=$(( $SUM + $FIRST$LAST ))
     #sleep 1
-done < input
+done < "$1"
 
 echo $SUM