diff --git a/man2/mprotect.2 b/man2/mprotect.2
index 09c2d8acc..821850501 100644
--- a/man2/mprotect.2
+++ b/man2/mprotect.2
@@ -130,7 +130,15 @@ Whether
 .B PROT_EXEC
 has any effect different from
 .B PROT_READ
-is architecture- and kernel version-dependent.
+depends on processor architecture, kernel version, and process state. If
+.B READ_IMPLIES_EXEC
+is set in the process's personality flags (see
+.BR personality (2)),
+specifying
+.B PROT_READ
+will implicitly add
+.BR PROT_EXEC.
+
 On some hardware architectures (e.g., i386),
 .B PROT_WRITE
 implies