diff --git a/ipojo/manipulator/src/main/java/org/apache/felix/ipojo/manipulation/ConstructorCodeAdapter.java b/ipojo/manipulator/src/main/java/org/apache/felix/ipojo/manipulation/ConstructorCodeAdapter.java
index 1a25c4e..e552072 100644
--- a/ipojo/manipulator/src/main/java/org/apache/felix/ipojo/manipulation/ConstructorCodeAdapter.java
+++ b/ipojo/manipulator/src/main/java/org/apache/felix/ipojo/manipulation/ConstructorCodeAdapter.java
@@ -89,7 +89,7 @@
         if (m_fields.contains(name) && m_owner.equals(owner)) {
             if (opcode == GETFIELD) {
                 String gDesc = "()" + desc;
-                visitMethodInsn(INVOKEVIRTUAL, owner, "_get" + name, gDesc);
+                visitMethodInsn(INVOKESPECIAL, owner, "_get" + name, gDesc);
                 return;
             } else
                 if (opcode == PUTFIELD) {
diff --git a/ipojo/manipulator/src/main/java/org/apache/felix/ipojo/manipulation/MethodCodeAdapter.java b/ipojo/manipulator/src/main/java/org/apache/felix/ipojo/manipulation/MethodCodeAdapter.java
index 03b8256..d8be885 100644
--- a/ipojo/manipulator/src/main/java/org/apache/felix/ipojo/manipulation/MethodCodeAdapter.java
+++ b/ipojo/manipulator/src/main/java/org/apache/felix/ipojo/manipulation/MethodCodeAdapter.java
@@ -76,7 +76,7 @@
         if (owner.equals(m_owner) && m_fields.contains(name)) {
             if (opcode == GETFIELD) {
                 String gDesc = "()" + desc;
-                visitMethodInsn(INVOKEVIRTUAL, owner, "_get" + name, gDesc);
+                visitMethodInsn(INVOKESPECIAL, owner, "_get" + name, gDesc);
                 return;
             } else if (opcode == PUTFIELD) {
                 String sDesc = "(" + desc + ")V";