diff --git a/src/command/command_builder.rs b/src/command/command_builder.rs
index 6b409bb..69a476c 100644
--- a/src/command/command_builder.rs
+++ b/src/command/command_builder.rs
@@ -7,13 +7,8 @@ pub struct CommandBuilder {
 }
 
 impl CommandBuilder {
-    pub fn new() -> Self {
-        Self { argv: Vec::new() }
-    }
-
-    pub fn argv(&mut self, argv: Vec<String>) -> &Self {
-        self.argv = argv;
-        self
+    pub fn new(argv: Vec<String>) -> Self {
+        Self { argv }
     }
 
     pub fn build(&self) -> Box<dyn Command> {
diff --git a/src/parser.rs b/src/parser.rs
index 98d9831..d258fbb 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -5,7 +5,7 @@ pub fn parse_command_line(line: String) -> Option<CommandSequence> {
     let argv: Vec<String> = line.split_whitespace().map(|s| s.to_string()).collect();
 
     if !argv.is_empty() {
-        let command = CommandBuilder::new().argv(argv).build();
+        let command = CommandBuilder::new(argv).build();
         Some(CommandSequence::new(command))
     } else {
         None