diff --git a/patcher/src/bin/patcher.rs b/patcher/src/bin/patcher.rs
index 96d570e..b4cb8e1 100644
--- a/patcher/src/bin/patcher.rs
+++ b/patcher/src/bin/patcher.rs
@@ -115,7 +115,11 @@ fn main() {
     };
     println!("{}", serde_json::to_string(&rt_data).unwrap());
     */
+
+    // Dynamic Loading
     insert_code(&mut apk, &rt_data).unwrap();
+
+    // Reflection
     let mut test_methods = HashMap::new();
     let test_class = IdType::class("theseus/T");
     for method in rt_data.get_method_referenced().iter() {
@@ -132,7 +136,7 @@ fn main() {
         .into_values()
         .map(|v| (v.descriptor.clone(), v))
         .collect();
-    apk.add_class("classes0.dex", class).unwrap();
+    apk.add_class("classes.dex", class).unwrap();
     let mut dex_files = vec![];
     let mut files = apk.gen_raw_dex().unwrap();
     let mut i = 0;
diff --git a/patcher/src/reflection_patcher.rs b/patcher/src/reflection_patcher.rs
index 21c595a..608e26c 100644
--- a/patcher/src/reflection_patcher.rs
+++ b/patcher/src/reflection_patcher.rs
@@ -13,8 +13,8 @@ use crate::{dex_types::*, register_manipulation::*, runtime_data::*};
 /// `meth`: the method that make reflectif calls. This is the method to patch.
 /// `ref_data`: the runtime data containing the reflectif calls informations.
 /// `tester_methods_class`: the class used to define the methods in `tester_methods`
-/// `tester_methods`: the methods used to test if a `java.lang.reflect.Method` is a specific method.
-///     Methods are indexed by the IdMethod they detect, and have a name derived from the method
+/// `tester_methods`: the methods used to test if a `java.lang.reflect.Method` or `java.lang.reflect.Constructor`
+///     is a specific method. Methods are indexed by the IdMethod they detect, and have a name derived from the method
 ///     they detect.
 pub fn transform_method(
     meth: &mut Method,
@@ -275,7 +275,11 @@ fn gen_tester_method(
         format!("{c_name}_{m_name}_{hash:016x}").into(),
         IdMethodType::new(
             IdType::boolean(),
-            vec![IdType::class("java/lang/reflect/Method")],
+            vec![if is_constructor {
+                IdType::class("java/lang/reflect/Constructor")
+            } else {
+                IdType::class("java/lang/reflect/Method")
+            }],
         ),
         tester_methods_class,
     );
@@ -421,17 +425,18 @@ fn gen_tester_method(
             lit: 1,
         },
         Instruction::Return { reg: reg_arr_val },
+        Instruction::Label { name: no_label },
         Instruction::Const {
             reg: reg_arr_val,
             lit: 0,
         },
-        Instruction::Label { name: no_label },
+        Instruction::Return { reg: reg_arr_val },
     ]);
 
     method.is_static = true;
     method.is_final = true;
     method.code = Some(Code::new(
-        3, //registers_size, 3 reg + 1 parameter reg
+        4, //registers_size, 3 reg + 1 parameter reg
         insns,
         Some(vec![Some("meth".into())]), // parameter_names
     ));