diff --git a/brush-shell/tests/cases/builtins/kill.yaml b/brush-shell/tests/cases/builtins/kill.yaml
index e318573a..3645ab67 100644
--- a/brush-shell/tests/cases/builtins/kill.yaml
+++ b/brush-shell/tests/cases/builtins/kill.yaml
@@ -4,8 +4,8 @@ cases:
     ignore_stderr: true
     stdin: |
       for i in $(seq 1 31); do kill -l $i; done
-      # limit the number of signals to 32. Realtime signals are not implemented yet.
-      for i in $(kill -l | sed -e "s/[[:digit:]]*)//g"); do echo $i; done | head -32
+      # limit the number of signals to 31. Realtime signals are not implemented yet.
+      for i in $(kill -l | sed -e "s/[[:digit:]]*)//g"); do echo $i; done | head -31
       # invalid option
       kill -l 9999
       kill -l HUP