diff --git a/NAMESPACE b/NAMESPACE
index 58e2748..649436a 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -20,9 +20,11 @@ import(DBI)
 import(RPostgreSQL)
 import(dplyr)
 import(fuzzyjoin)
+import(glue)
 import(lubridate)
 import(nycflights13)
 import(rlang)
+import(tidyr)
 import(utils)
 importFrom(dplyr,"%>%")
 importFrom(dplyr,arrange)
diff --git a/man/dlabel.Rd b/man/dlabel.Rd
index f9904fb..6608bff 100644
--- a/man/dlabel.Rd
+++ b/man/dlabel.Rd
@@ -70,7 +70,7 @@ calculation of contamination in blood cultures.
 set.seed(123)
 dl.test <- data.frame(id = sample(1:10, 30, replace = TRUE), 
            category = sample(letters[1:4], 30, replace = TRUE), 
-           timestamp = as.POSIXct(runif(size, 1704063600, 1711922400), 
+           timestamp = as.POSIXct(runif(30, 1704063600, 1711922400), 
                                         origin = "1970-01-01"))
 
 # test: dlabel will reveal three id-category combinations with temporal