diff --git a/src/state.rs b/src/state.rs
index b7b3a68..8abf8fa 100644
--- a/src/state.rs
+++ b/src/state.rs
@@ -120,14 +120,14 @@ impl State {
 		let env = BTreeMap::from_iter ([
 			("arg", Value::BogusArg (arg)),
 			("print", Value::BogusPrint),
-		].map (|(k, v)| (k.to_string (), v)).into_iter ());
+		].map (|(k, v)| (k.to_string (), v)));
 		
 		vec! [
 			Value::BogusEnv (env),
 		]
 	}
 	
-	pub fn execute_chunk (&mut self, chunk: &Chunk, upvalues: &Vec <Value>) 
+	pub fn execute_chunk (&mut self, chunk: &Chunk, upvalues: &[Value]) 
 	-> Vec <Value> {
 		let max_iters = 2000;
 		
diff --git a/src/tests.rs b/src/tests.rs
index 491b09d..4b32591 100644
--- a/src/tests.rs
+++ b/src/tests.rs
@@ -38,6 +38,7 @@ fn floats () {
 	
 	for (arg, expected) in [
 		(vec! ["_exe_name"], vec! [3.5.into ()]),
+		(vec! ["_exe_name", " "], vec! [3.5.into ()]),
 	] {
 		let mut vm = State::default ();
 		let upvalues = State::upvalues_from_args (arg.into_iter ().map (|s| s.to_string ()));
@@ -85,7 +86,7 @@ fn is_93 () {
 			"print",
 			"it's 93",
 			"it's not 93",
-		].into_iter ().map (|s| Value::from (s)).collect (),
+		].into_iter ().map (Value::from).collect (),
 	};
 	
 	for (arg, expected) in [