diff --git a/kalk/src/inverter.rs b/kalk/src/inverter.rs
index 26d92e9..fab1fff 100644
--- a/kalk/src/inverter.rs
+++ b/kalk/src/inverter.rs
@@ -353,7 +353,7 @@ fn invert_fn_call(
     let mut parameters_iter = parameters.iter();
     for argument in arguments {
         symbol_table.insert(Stmt::VarDecl(
-            Identifier::from_full_name(&parameters_iter.next().unwrap().to_string()),
+            Identifier::from_full_name(parameters_iter.next().unwrap()),
             Box::new(argument.clone()),
         ));
     }
diff --git a/kalk/src/parser.rs b/kalk/src/parser.rs
index 5861962..c14ebb1 100644
--- a/kalk/src/parser.rs
+++ b/kalk/src/parser.rs
@@ -728,7 +728,7 @@ fn skip_newlines(context: &mut Context) {
 
 fn string_to_num(value: &str) -> Result<f64, KalkError> {
     let base = get_base(value)?;
-    if let Some(result) = crate::radix::parse_float_radix(&value.replace(" ", ""), base) {
+    if let Some(result) = crate::radix::parse_float_radix(&value.replace(' ', ""), base) {
         Ok(result)
     } else {
         Err(KalkError::InvalidNumberLiteral(value.into()))