diff --git a/man5/proc.5 b/man5/proc.5
index 75d526b03..5886bac99 100644
--- a/man5/proc.5
+++ b/man5/proc.5
@@ -2009,7 +2009,6 @@ encoded using the following two-letter codes:
     gd  - stack segment grows down
     pf  - pure PFN range
     dw  - disabled write to the mapped file
-    mp  - MPX-specific VMA (x86, since Linux 3.19)
     lo  - pages are locked in memory
     io  - memory mapped I/O area
     sr  - sequential read advise provided