diff --git a/install/man/man1/fpc.1 b/install/man/man1/fpc.1
index 409afd5ba3..b8cbbe0bc7 100644
--- a/install/man/man1/fpc.1
+++ b/install/man/man1/fpc.1
@@ -436,7 +436,7 @@ Level 2 optimizations (-O1 plus some slower optimizations).
 .I 3
 Level 3 optimizations (-O2 plus -Ou).
 .TP
-.I Pn
+.I pn
 Specify processor : n can be one of
 .RS
 .TP