diff --git a/lab2/gen_num.sh b/lab2/gen_num.sh
old mode 100644
new mode 100755
index 75ce8d6..609945f
--- a/lab2/gen_num.sh
+++ b/lab2/gen_num.sh
@@ -1,4 +1,4 @@
 #!/bin/bash
 
 # This is one-liner copied from chatgpt.
-shuf -i 0-1000000 -n 1000000 > numbers.txt
\ No newline at end of file
+shuf -i 1-1000000 -n 1000000 > numbers.txt
\ No newline at end of file