diff --git a/examples/false-interpreter/False.roc b/examples/false-interpreter/False.roc
index 4c1f58e87f..97e6c25de3 100644
--- a/examples/false-interpreter/False.roc
+++ b/examples/false-interpreter/False.roc
@@ -21,10 +21,9 @@ app "false"
 
 InterpreterErrors : [ BadUtf8, DivByZero, EmptyStack, InvalidBooleanValue, InvalidChar Str, MaxInputNumber, NoLambdaOnStack, NoNumberOnStack, NoVariableOnStack, NoScope, OutOfBounds, UnexpectedEndOfData ]
 
-main : List Str -> Task {} []
-main = \filenames ->
-    filenames
-        |> List.walk  (\filename, task  -> Task.await task (\_ -> (interpretFile filename))) (Task.succeed {})
+main : Str -> Task {} []
+main = \filename ->
+    interpretFile filename
         |> Task.await (\_ -> Stdout.line "Completed all tasks successfully")
         |> Task.onFail (\StringErr e -> Stdout.line "Ran into problem:\n\(e)\n")
     
diff --git a/examples/false-interpreter/platform/Package-Config.roc b/examples/false-interpreter/platform/Package-Config.roc
index 0d00b4c0ed..bc1740c227 100644
--- a/examples/false-interpreter/platform/Package-Config.roc
+++ b/examples/false-interpreter/platform/Package-Config.roc
@@ -1,5 +1,5 @@
 platform examples/cli
-    requires {}{ main : List Str -> Task {} [] } # TODO FIXME
+    requires {}{ main : Str -> Task {} [] } # TODO FIXME
     exposes []
     packages {}
     imports [ Task.{ Task } ]
@@ -18,5 +18,5 @@ platform examples/cli
             getChar : Effect U8
         }
 
-mainForHost : List Str -> Task {} [] as Fx
-mainForHost = \list -> main list
+mainForHost : Str -> Task {} [] as Fx
+mainForHost = \file -> main file
diff --git a/examples/false-interpreter/platform/src/lib.rs b/examples/false-interpreter/platform/src/lib.rs
index 3704bbff4c..e62e62174f 100644
--- a/examples/false-interpreter/platform/src/lib.rs
+++ b/examples/false-interpreter/platform/src/lib.rs
@@ -13,7 +13,7 @@ use std::os::raw::c_char;
 
 extern "C" {
     #[link_name = "roc__mainForHost_1_exposed"]
-    fn roc_main(args: RocList<RocStr>, output: *mut u8) -> ();
+    fn roc_main(args: RocStr, output: *mut u8) -> ();
 
     #[link_name = "roc__mainForHost_size"]
     fn roc_main_size() -> i64;
@@ -64,11 +64,8 @@ pub unsafe fn roc_panic(c_ptr: *mut c_void, tag_id: u32) {
 
 #[no_mangle]
 pub fn rust_main() -> i32 {
-    let args: Vec<RocStr> = env::args()
-        .skip(1)
-        .map(|arg| RocStr::from_slice(arg.as_bytes()))
-        .collect();
-    let args = RocList::<RocStr>::from_slice(&args);
+    let arg = env::args().skip(1).next().unwrap();
+    let arg = RocStr::from_slice(arg.as_bytes());
 
     let size = unsafe { roc_main_size() } as usize;
     let layout = Layout::array::<u8>(size).unwrap();
@@ -77,7 +74,7 @@ pub fn rust_main() -> i32 {
         // TODO allocate on the stack if it's under a certain size
         let buffer = std::alloc::alloc(layout);
 
-        roc_main(args, buffer);
+        roc_main(arg, buffer);
 
         let result = call_the_closure(buffer);