diff --git a/Documentation/admin-guide/hw-vuln/core-scheduling.rst b/Documentation/admin-guide/hw-vuln/core-scheduling.rst
index 0febe458597c..b9ab02325e8b 100644
--- a/Documentation/admin-guide/hw-vuln/core-scheduling.rst
+++ b/Documentation/admin-guide/hw-vuln/core-scheduling.rst
@@ -66,8 +66,8 @@ arg4:
     will be performed for all tasks in the task group of ``pid``.
 
 arg5:
-    userspace pointer to an unsigned long for storing the cookie returned by
-    ``PR_SCHED_CORE_GET`` command. Should be 0 for all other commands.
+    userspace pointer to an unsigned long long for storing the cookie returned
+    by ``PR_SCHED_CORE_GET`` command. Should be 0 for all other commands.
 
 In order for a process to push a cookie to, or pull a cookie from a process, it
 is required to have the ptrace access mode: `PTRACE_MODE_READ_REALCREDS` to the