diff --git a/math/algotutor/Makefile b/math/algotutor/Makefile
index 42351bb9be53..e304a089cb2e 100644
--- a/math/algotutor/Makefile
+++ b/math/algotutor/Makefile
@@ -26,7 +26,7 @@ LIBFILES=	BST.pm Board.pm Collection.pm Configurable.pm DCEdge.pm \
 post-patch:
 	${REINPLACE_CMD}  -e 's,#!/usr/bin/perl,#!${PERL},' ${WRKSRC}/algotutor
 	${PERL} -pi -e "s'!!PREFIX!!'${PREFIX}'g" ${WRKSRC}/algotutor
-	${REINPLACE_CMD} -e 's,!!PERL_VER!!,${PERL_VER},' \
+	${REINPLACE_CMD} -e 's,!!SITE_PERL!!,${SITE_PERL},' \
 		${WRKSRC}/algotutor
 
 do-install:
diff --git a/math/algotutor/files/patch-algotutor b/math/algotutor/files/patch-algotutor
index 7eda362ab7de..a12946b54e00 100644
--- a/math/algotutor/files/patch-algotutor
+++ b/math/algotutor/files/patch-algotutor
@@ -5,7 +5,7 @@
  use strict;
  use Getopt::Std;
 -use lib '/usr/share/perl5/algotutor';
-+use lib '!!PREFIX!!/lib/perl5/site_perl/!!PERL_VER!!/algotutor';
++use lib '!!SITE_PERL!!/algotutor';
  
  BEGIN {
      my ($path) = $0 =~ m#(.*/)#;