diff --git a/C4/Search.pm b/C4/Search.pm
index bec1f89cd9..cd43ea4f56 100644
--- a/C4/Search.pm
+++ b/C4/Search.pm
@@ -1681,7 +1681,9 @@ sub searchResults {
     while ( ( my $column ) = $sth2->fetchrow ) {
         my ( $tagfield, $tagsubfield ) =
           &GetMarcFromKohaField( "items." . $column, "" );
-        $subfieldstosearch{$column} = $tagsubfield;
+        if ( defined $tagsubfield ) {
+            $subfieldstosearch{$column} = $tagsubfield;
+        }
     }
 
     # handle which records to actually retrieve