diff --git a/examples/interactive/cli-platform/Effect.roc b/examples/interactive/cli-platform/Effect.roc
index 3ae9806fc4..d8caa137f0 100644
--- a/examples/interactive/cli-platform/Effect.roc
+++ b/examples/interactive/cli-platform/Effect.roc
@@ -3,8 +3,8 @@ hosted Effect
     imports [InternalHttp.{ Request, Response }]
     generates Effect with [after, map, always, forever, loop]
 
-putLine : Str -> Effect {}
-
-getLine : Effect Str
+stdoutLine : Str -> Effect {}
+stderrLine : Str -> Effect {}
+stdinLine : Effect Str
 
 sendRequest : Box Request -> Effect Response
diff --git a/examples/interactive/cli-platform/Stdout.roc b/examples/interactive/cli-platform/Stdout.roc
index aeaf0c2501..154096d3b4 100644
--- a/examples/interactive/cli-platform/Stdout.roc
+++ b/examples/interactive/cli-platform/Stdout.roc
@@ -4,5 +4,5 @@ interface Stdout
 
 line : Str -> Task {} * [Write [Stdout]*]*
 line = \str ->
-    Effect.map (Effect.putLine str) (\_ -> Ok {})
+    Effect.map (Effect.stdoutLine str) (\_ -> Ok {})
     |> InternalTask.fromEffect
diff --git a/examples/interactive/cli-platform/src/lib.rs b/examples/interactive/cli-platform/src/lib.rs
index 09677a87e3..4469d3b9f5 100644
--- a/examples/interactive/cli-platform/src/lib.rs
+++ b/examples/interactive/cli-platform/src/lib.rs
@@ -113,7 +113,7 @@ unsafe fn call_the_closure(closure_data_ptr: *const u8) -> i64 {
 }
 
 #[no_mangle]
-pub extern "C" fn roc_fx_getLine() -> RocStr {
+pub extern "C" fn roc_fx_stdinLine() -> RocStr {
     use std::io::{self, BufRead};
 
     let stdin = io::stdin();
@@ -123,11 +123,17 @@ pub extern "C" fn roc_fx_getLine() -> RocStr {
 }
 
 #[no_mangle]
-pub extern "C" fn roc_fx_putLine(line: &RocStr) {
+pub extern "C" fn roc_fx_stdoutLine(line: &RocStr) {
     let string = line.as_str();
     println!("{}", string);
 }
 
+#[no_mangle]
+pub extern "C" fn roc_fx_stderrLine(line: &RocStr) {
+    let string = line.as_str();
+    eprintln!("{}", string);
+}
+
 #[no_mangle]
 pub extern "C" fn roc_fx_sendRequest(roc_request: &glue::Request) -> glue::Response {
     let mut builder = reqwest::blocking::ClientBuilder::new();