diff --git a/circom/src/input_user.rs b/circom/src/input_user.rs
index 60da3728a..7f63975a0 100644
--- a/circom/src/input_user.rs
+++ b/circom/src/input_user.rs
@@ -47,11 +47,19 @@ const JSON: &'static str = "json";
 
 impl Input {
     pub fn new() -> Result<Input, ()> {
+        use ansi_term::Colour;
         use input_processing::SimplificationStyle;
         let matches = input_processing::view();
         let input = input_processing::get_input(&matches)?;
-        let file_name = input.file_stem().unwrap().to_str().unwrap().to_string();
+        let mut file_name = input.file_stem().unwrap().to_str().unwrap().to_string();
         let output_path = input_processing::get_output_path(&matches)?;
+
+        let c_flag = input_processing::get_c(&matches);
+
+        if c_flag && (file_name == "main" || file_name == "fr" || file_name == "calcwit"){
+            println!("{}", Colour::Yellow.paint(format!("The name {} is reserved in Circom when using de --c flag. The files generated for your circuit will use the name {}_c instead of {}.", file_name, file_name, file_name)));
+            file_name = format!("{}_c", file_name)
+        };
         let output_c_path = Input::build_folder(&output_path, &file_name, CPP);
         let output_js_path = Input::build_folder(&output_path, &file_name, JS);
         let o_style = input_processing::get_simplification_style(&matches)?;
@@ -76,7 +84,7 @@ impl Input {
             ),
             wat_flag:input_processing::get_wat(&matches),
             wasm_flag: input_processing::get_wasm(&matches),
-            c_flag: input_processing::get_c(&matches),
+            c_flag: c_flag,
             r1cs_flag: input_processing::get_r1cs(&matches),
             sym_flag: input_processing::get_sym(&matches),
             main_inputs_flag: input_processing::get_main_inputs_log(&matches),
diff --git a/parser/src/syntax_sugar_remover.rs b/parser/src/syntax_sugar_remover.rs
index 3cc96c2e1..2d84affdc 100644
--- a/parser/src/syntax_sugar_remover.rs
+++ b/parser/src/syntax_sugar_remover.rs
@@ -55,7 +55,7 @@ fn check_anonymous_components_statement(
                     "An anonymous component cannot be used in the left side of an assignment".to_string())
                 )
             } else{
-                if rhe.contains_anonymous_comp() && *op != AssignOp::AssignSignal{
+                if rhe.contains_anonymous_comp() && *op == AssignOp::AssignSignal{
                     let error = format!("Anonymous components only admit the use of the operator <==");
                     Result::Err(anonymous_general_error(meta.clone(),error))
                 } else{