diff --git a/lib/libdevdctl/guid.h b/lib/libdevdctl/guid.h
index 02ea6f27dc04..7e80555a22f3 100644
--- a/lib/libdevdctl/guid.h
+++ b/lib/libdevdctl/guid.h
@@ -70,9 +70,6 @@ class Guid
 	Guid(const std::string &guid);
 	static Guid InvalidGuid();
 
-	/* Assignment */
-	Guid& operator=(const Guid& rhs);
-
 	/* Test the validity of this guid. */
 	bool IsValid()			 const;
 
@@ -110,13 +107,6 @@ Guid::InvalidGuid()
 	return (Guid(INVALID_GUID));
 }
 
-inline Guid&
-Guid::operator=(const Guid &rhs)
-{
-	m_GUID = rhs.m_GUID;
-	return (*this);
-}
-
 inline bool
 Guid::IsValid() const
 {