diff --git a/libs/yasn/asn.cpp b/libs/yasn/asn.cpp
index 50b803c6..6d76e3bc 100644
--- a/libs/yasn/asn.cpp
+++ b/libs/yasn/asn.cpp
@@ -1334,18 +1334,6 @@ ASNObjId::~ASNObjId()
     m_ids.clear();
 }
 
-ASNObjId& ASNObjId::operator=(const String& val)
-{
-    m_value = val;
-    return *this;
-}
-
-ASNObjId& ASNObjId::operator=(const char* val)
-{
-    m_value.assign(val);
-    return *this;
-}
-
 void ASNObjId::toDataBlock()
 {
     DDebug(s_libName.c_str(),DebugAll,"ASNObjId::toDataBlock() '%s'", m_value.c_str());
diff --git a/libs/yasn/yateasn.h b/libs/yasn/yateasn.h
index 6841b73e..622f6756 100644
--- a/libs/yasn/yateasn.h
+++ b/libs/yasn/yateasn.h
@@ -114,13 +114,14 @@ public:
      */
     inline AsnObject()
 	{}
+
     /**
-     * Constructor
-     * @param data Data from which the object is built
-     * @param len Length of the given data
+     * Copy constructor
+     * @param original Value object to copy
      */
-    AsnObject(void* data, int len)
+    inline AsnObject(const AsnObject& original)
 	{}
+
     /**
      * Destructor
      */
@@ -181,6 +182,14 @@ public:
 	: m_type(0), m_data("")
 	{}
 
+    /**
+     * Copy constructor
+     * @param original Value object to copy
+     */
+    inline AsnValue(const AsnValue& original)
+	: m_type(original.m_type), m_data(original.m_data)
+	{ }
+
     /**
      * Constructor
      * @param value Object value
@@ -381,7 +390,7 @@ private:
     int maxVal;
     int minVal;
     unsigned int m_index;
-    
+
     static TokenDict s_access[];
 };
 
@@ -396,6 +405,14 @@ public:
      */
     ASNObjId();
 
+    /**
+     * Copy constructor
+     * @param original OID object to copy
+     */
+    inline ASNObjId(const ASNObjId& original)
+	: m_value(original.m_value), m_name(original.m_name)
+	{ }
+
     /**
      * Constructor
      * @param val OID value in string format
@@ -420,15 +437,23 @@ public:
      */
     ~ASNObjId();
 
+    /**
+     * Assignment operator from OID
+     */
+    inline ASNObjId& operator=(const ASNObjId& original)
+	{ m_value = original.toString(); return *this; }
+
     /**
      * Assign operator from a string value
      */
-    ASNObjId& operator=(const String& val);
+    inline ASNObjId& operator=(const String& val)
+	{ m_value = val; return *this; }
 
     /**
      * Assign operator from a const char* value
      */
-    ASNObjId& operator=(const char* val);
+    inline ASNObjId& operator=(const char* val)
+	{ m_value = val; return *this; }
 
     /**
      * Transform the value of this OID from a string value to a sequence of numbers
diff --git a/modules/server/zapcard.cpp b/modules/server/zapcard.cpp
index f47b2f2a..39151ab5 100644
--- a/modules/server/zapcard.cpp
+++ b/modules/server/zapcard.cpp
@@ -579,8 +579,6 @@ public:
 	const NamedList& params);
     virtual ~ZapCircuit()
 	{ cleanup(false); }
-    inline const ZapDevice device() const
-	{ return m_device; }
     virtual void destroyed()
 	{ cleanup(true); }
     // Change circuit status. Clear events on status change
diff --git a/yateclass.h b/yateclass.h
index 743d764f..3964f6cd 100644
--- a/yateclass.h
+++ b/yateclass.h
@@ -794,7 +794,13 @@ void operator=(const type&)
  */
 class YATE_API GenObject
 {
+    YNOCOPY(GenObject); // no automatic copies please
 public:
+    /**
+     * Default constructor
+     */
+    inline GenObject() { }
+
     /**
      * Destructor.
      */