diff --git a/blocks/ORB/List.pm b/blocks/ORB/List.pm
index dcea024..7e5f61d 100644
--- a/blocks/ORB/List.pm
+++ b/blocks/ORB/List.pm
@@ -73,7 +73,8 @@ sub _build_recipe {
                                                             });
     }
 
-    my $time = ($recipe -> {"preptime"} + $recipe -> {"cooktime"}) * 60;
+    my $time = (($recipe -> {"preptime"} // 0) +
+                ($recipe -> {"cooktime"} // 0) ) * 60;
 
     return $self -> {"template"} -> load_template("list/recipe.tem",
                                                   { "%(id)s"       => $recipe -> {"id"},
diff --git a/blocks/ORB/Search.pm b/blocks/ORB/Search.pm
index f39b467..8cfda89 100644
--- a/blocks/ORB/Search.pm
+++ b/blocks/ORB/Search.pm
@@ -71,7 +71,8 @@ sub _build_recipe {
                                                             });
     }
 
-    my $time = ($recipe -> {"preptime"} + $recipe -> {"cooktime"}) * 60;
+    my $time = (($recipe -> {"preptime"} // 0) +
+                ($recipe -> {"cooktime"} // 0) ) * 60;
 
     return $self -> {"template"} -> load_template("search/recipe.tem",
                                                   { "%(id)s"       => $recipe -> {"id"},
diff --git a/blocks/ORB/View.pm b/blocks/ORB/View.pm
index f954807..ac5fc57 100644
--- a/blocks/ORB/View.pm
+++ b/blocks/ORB/View.pm
@@ -159,7 +159,7 @@ sub _generate_view {
     my $cooktime  = $recipe -> {"cooktime"} ? $self -> {"template"} -> humanise_seconds($recipe -> {"cooktime"} * 60)
                                             : "{L_VIEW_NOTSET}";
 
-    my $totaltime = $recipe -> {"preptime"} + $recipe -> {"cooktime"};
+    my $totaltime = ($recipe -> {"preptime"} // 0) + ($recipe -> {"cooktime"} // 0);
     my $timereq   = $totaltime ? $self -> {"template"} -> humanise_seconds($totaltime * 60)
                                : "{L_VIEW_NOTSET}";