diff --git a/util/ass/em_ass.6 b/util/ass/em_ass.6
index b0f7fde34..1f8fdeb56 100644
--- a/util/ass/em_ass.6
+++ b/util/ass/em_ass.6
@@ -29,7 +29,7 @@ Compact EM assembly language modules (optimized or not), recognized by a
 magic number in the first word.
 .PD 0
 .IP "2 -"
-UNIX archives, as maintained by arch(I). These archives must contain
+UNIX archives, as maintained by arch(1). These archives must contain
 EM modules only.
 .PD
 .PP