1 files changed, 1 insertions, 1 deletions

diff --git a/src/Key.cpp b/src/Key.cpp
index 8c96e59..8ba497a 100644
--- a/src/Key.cpp
+++ b/src/Key.cpp
@@ -37,7 +37,7 @@ Key::Key(const PList::Key& k) : Node(PLIST_UINT)
     plist_set_key_val(_node, k.GetValue().c_str());
 }
 
-Key& Key::operator=(PList::Key& k)
+Key& Key::operator=(const PList::Key& k)
 {
     plist_free(_node);
     _node = plist_copy(k.GetPlist());