diff --git a/Cargo.toml b/Cargo.toml
index b329f81..aaddc44 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "mini-calc"
-version = "2.0.0"
+version = "2.1.0"
 license = "GPL-3.0-or-later"
 description = "A minimalistic configurable rust calculator"
 homepage = "https://calc.nwa2coco.fr"
diff --git a/README.md b/README.md
index 7e83146..fe9913d 100644
--- a/README.md
+++ b/README.md
@@ -61,8 +61,7 @@ cargo install mini-calc
     - [X] Basic operation interpreter
     - [X] Advanced operation interpreter
     - [X] Identifiers (variable) interpreter
-- [ ] Built-in
-    - [ ] ans
+- [X] Built-in
     - [X] pi 
     - [X] e
 - [ ] Config
diff --git a/src/interpreting/interpreter.rs b/src/interpreting/interpreter.rs
index 0655076..96f9bc9 100644
--- a/src/interpreting/interpreter.rs
+++ b/src/interpreting/interpreter.rs
@@ -31,8 +31,6 @@ pub fn interpret(ast: Ast, mut ram: &mut HashMap<String, Parameters>) -> Paramet
                 Parameters::Identifier(s) => Parameters::Identifier(s),
                 Parameters::Null => Parameters::Null,
             };
-            ram.remove("ans");
-            ram.insert("ans".to_string(),last.clone());
             last.clone()
         }
     }
diff --git a/src/main.rs b/src/main.rs
index f567bb3..0ec9ed8 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -34,22 +34,21 @@ fn main() {
     let mut ram: HashMap<String, Parameters> = HashMap::new();
     ram.insert("pi".to_string(),Parameters::Float(PI));
     ram.insert("e".to_string(), Parameters::Float(E));
-    ram.insert("ans".to_string(), Parameters::Null);
     while let ReadResult::Input(line) = interface.read_line().unwrap() {
         match line.as_str().trim() {
             "info" => {
-                let message = Color::Purple.paint(" Calc v2.0.0 \n Author: Charlotte Thomas \n Written in Rust \n Repo: https://github.com/coco33920/calc\n");
+                let message = Color::Purple.paint(" Calc v2.1.0 \n Author: Charlotte Thomas \n Written in Rust \n Repo: https://github.com/coco33920/calc\n");
                 println!("{}", message)
             }
             "exit" => break,
             "help" => {
                 let message = Color::Purple.paint(
-                    " Calc v2.0.0 Help \n > info : show infos \n > exit : exit the program \n > help : print this help \n > verbose : toggle the verbose \n > version : prints the version \n"
+                    " Calc v2.1.0 Help \n > info : show infos \n > exit : exit the program \n > help : print this help \n > verbose : toggle the verbose \n > version : prints the version \n"
                 );
                 println!("{}", message)
             }
             "version" => {
-                let message = Color::Purple.paint(" Calc v2.0.0\n");
+                let message = Color::Purple.paint(" Calc v2.1.0\n");
                 println!("{}", message)
             }
             "verbose" => {