diff --git a/inst/dev/recover-synthetic/rt.R b/inst/dev/recover-synthetic/rt.R
index 2661d3283..a447debf0 100644
--- a/inst/dev/recover-synthetic/rt.R
+++ b/inst/dev/recover-synthetic/rt.R
@@ -106,7 +106,7 @@ for (method in c("nuts")) {
   # RW (every month) + stationary Guassian process
   gp_rw[[method]] <-
     estimate_infections(sim_cases,
-      example_generation_time = generation_time_opts(example_generation_time),
+      generation_time = generation_time_opts(example_generation_time),
       delays = delay_opts(example_incubation_period + example_reporting_delay),
       rt = rt_opts(
         prior = list(mean = 2, sd = 0.25), rw = 14, gp_on = "R0"
@@ -125,7 +125,7 @@ for (method in c("nuts")) {
   if (fit_daily) {
     daily_rw[[method]] <-
       estimate_infections(sim_cases,
-        example_generation_time = generation_time_opts(example_generation_time),
+        generation_time = generation_time_opts(example_generation_time),
         delays = delay_opts(
           example_incubation_period + example_reporting_delay
         ),