diff --git a/man2/prctl.2 b/man2/prctl.2
index bd3dca927..6bc0e0001 100644
--- a/man2/prctl.2
+++ b/man2/prctl.2
@@ -1297,7 +1297,7 @@ This parameter may enforce a read-only policy which will result in the
 call failing with the error
 .BR ENXIO .
 For further details, see the kernel source file
-.IR Documentation/admin-guide/kernel-parameters.txt .
+.IR Documentation/admin\-guide/kernel\-parameters.txt .
 .\"
 .\" prctl PR_TASK_PERF_EVENTS_DISABLE
 .TP