diff --git a/doc/lp-set-dup.1 b/doc/lp-set-dup.1
index 404b451..d694d5d 100644
--- a/doc/lp-set-dup.1
+++ b/doc/lp-set-dup.1
@@ -43,7 +43,7 @@ configuration files.
 In each case, the script\-specific variable takes precedence over the
 package\-wide variable.
 .TP
-.BR BACKPORTPACKAGE_LPINSTANCE ", " UBUNTUTOOLS_LPINSTANCE
+.BR LP_SET_DUP_LPINSTANCE ", " UBUNTUTOOLS_LPINSTANCE
 The default value for \fB--lpinstance\fR.
 
 .SH SEE ALSO