diff --git a/opac/opac-readingrecord.pl b/opac/opac-readingrecord.pl
index df7f6a2c0b..7ee0a5f697 100755
--- a/opac/opac-readingrecord.pl
+++ b/opac/opac-readingrecord.pl
@@ -25,6 +25,7 @@ use C4::Koha qw(
     getitemtypeimagelocation
     GetNormalizedISBN
     GetNormalizedUPC
+    GetNormalizedOCLCNumber
 );
 use C4::Biblio;
 use C4::Members qw( GetAllIssues );