diff --git a/inst/examples/target-runner-c/parameters.txt b/inst/examples/target-runner-c/parameters.txt
index 64190eb5..93ae5a0b 100644
--- a/inst/examples/target-runner-c/parameters.txt
+++ b/inst/examples/target-runner-c/parameters.txt
@@ -1,2 +1,5 @@
 p_int  "--p-int " i (1,100)
 p_real "--p-real " r (1, 2)
+## Uncomment these lines to simulate rejection
+# reject "--reject " c (0, 1)
+# reject_rate "--reject " c (0.25)