diff --git a/pages/common/ulimit.md b/pages/common/ulimit.md
index 20eb41c3ec..23d663895e 100644
--- a/pages/common/ulimit.md
+++ b/pages/common/ulimit.md
@@ -1,6 +1,7 @@
 # ulimit
 
 > Get and set resource limits for user processes.
+> It is a shell builtin hence not shell-agnostic.
 > More information: <https://www.gnu.org/software/bash/manual/bash.html#index-ulimit>.
 
 - Get the properties of all the user limits:
@@ -19,6 +20,6 @@
 
 `ulimit -u 30`
 
-- Display help:
+- Display help (Bash only):
 
 `help ulimit`