diff --git a/src/command/builtins.rs b/src/command/builtins.rs
index dc3524c..f192b69 100644
--- a/src/command/builtins.rs
+++ b/src/command/builtins.rs
@@ -31,3 +31,7 @@ pub(super) fn cd(args: &Vec<String>) -> ExitCode {
 
     exit_code
 }
+
+pub(super) fn colon(_args: &Vec<String>) -> ExitCode {
+    ExitCode::success()
+}
diff --git a/src/command/mod.rs b/src/command/mod.rs
index 7ae6c22..23d2b3a 100644
--- a/src/command/mod.rs
+++ b/src/command/mod.rs
@@ -24,8 +24,9 @@ impl Builtin {
         let mut args = argv.clone();
         let program = args.remove(0);
 
-        let function = match program.as_str() {
+        let function: Option<BuiltinFunction> = match program.as_str() {
             "cd" => Some(builtins::cd),
+            ":" => Some(builtins::colon),
             _ => None,
         };