diff --git a/testing/simulator/src/cli.rs b/testing/simulator/src/cli.rs
index 444e67010..de78aaa05 100644
--- a/testing/simulator/src/cli.rs
+++ b/testing/simulator/src/cli.rs
@@ -36,11 +36,11 @@ pub fn cli_app<'a, 'b>() -> App<'a, 'b> {
                         .takes_value(true)
                         .default_value("4")
                         .help("Speed up factor"))
-                    .arg(Arg::with_name("end_after_checks")
-                        .short("e")
-                        .long("end_after_checks")
+                    .arg(Arg::with_name("continue_after_checks")
+                        .short("c")
+                        .long("continue_after_checks")
                         .takes_value(false)
-                        .help("End after checks (default true)"))
+                        .help("Continue after checks (default false)"))
         )
         .subcommand(
             SubCommand::with_name("no-eth1-sim")
@@ -64,11 +64,11 @@ pub fn cli_app<'a, 'b>() -> App<'a, 'b> {
                         .takes_value(true)
                         .default_value("4")
                         .help("Speed up factor"))
-                    .arg(Arg::with_name("end_after_checks")
-                        .short("e")
-                        .long("end_after_checks")
+                    .arg(Arg::with_name("continue_after_checks")
+                        .short("c")
+                        .long("continue_after_checks")
                         .takes_value(false)
-                        .help("End after checks (default true)"))
+                        .help("Continue after checks (default false)"))
         )
         .subcommand(
             SubCommand::with_name("syncing-sim")
diff --git a/testing/simulator/src/eth1_sim.rs b/testing/simulator/src/eth1_sim.rs
index 64c439320..edb56d901 100644
--- a/testing/simulator/src/eth1_sim.rs
+++ b/testing/simulator/src/eth1_sim.rs
@@ -17,12 +17,12 @@ pub fn run_eth1_sim(matches: &ArgMatches) -> Result<(), String> {
         .expect("missing validators_per_node default");
     let speed_up_factor =
         value_t!(matches, "speed_up_factor", u64).expect("missing speed_up_factor default");
-    let end_after_checks = !matches.is_present("end_after_checks");
+    let continue_after_checks = matches.is_present("continue_after_checks");
 
     println!("Beacon Chain Simulator:");
     println!(" nodes:{}", node_count);
     println!(" validators_per_node:{}", validators_per_node);
-    println!(" end_after_checks:{}", end_after_checks);
+    println!(" continue_after_checks:{}", continue_after_checks);
 
     // Generate the directories and keystores required for the validator clients.
     let validator_files = (0..node_count)
@@ -174,9 +174,9 @@ pub fn run_eth1_sim(matches: &ArgMatches) -> Result<(), String> {
         onboarding?;
 
         // The `final_future` either completes immediately or never completes, depending on the value
-        // of `end_after_checks`.
+        // of `continue_after_checks`.
 
-        if !end_after_checks {
+        if continue_after_checks {
             future::pending::<()>().await;
         }
         /*
diff --git a/testing/simulator/src/no_eth1_sim.rs b/testing/simulator/src/no_eth1_sim.rs
index b95bdce93..621b8ef3b 100644
--- a/testing/simulator/src/no_eth1_sim.rs
+++ b/testing/simulator/src/no_eth1_sim.rs
@@ -17,12 +17,12 @@ pub fn run_no_eth1_sim(matches: &ArgMatches) -> Result<(), String> {
         .expect("missing validators_per_node default");
     let speed_up_factor =
         value_t!(matches, "speed_up_factor", u64).expect("missing speed_up_factor default");
-    let end_after_checks = !matches.is_present("end_after_checks");
+    let continue_after_checks = matches.is_present("continue_after_checks");
 
     println!("Beacon Chain Simulator:");
     println!(" nodes:{}", node_count);
     println!(" validators_per_node:{}", validators_per_node);
-    println!(" end_after_checks:{}", end_after_checks);
+    println!(" continue_after_checks:{}", continue_after_checks);
 
     // Generate the directories and keystores required for the validator clients.
     let validator_files = (0..node_count)
@@ -141,9 +141,9 @@ pub fn run_no_eth1_sim(matches: &ArgMatches) -> Result<(), String> {
         start_checks?;
 
         // The `final_future` either completes immediately or never completes, depending on the value
-        // of `end_after_checks`.
+        // of `continue_after_checks`.
 
-        if !end_after_checks {
+        if continue_after_checks {
             future::pending::<()>().await;
         }
         /*