1 files changed, 2 insertions, 2 deletions

diff --git a/src/Array.cpp b/src/Array.cpp
index 3036476..7c38a69 100644
--- a/src/Array.cpp
+++ b/src/Array.cpp
@@ -141,9 +141,9 @@ void Array::Remove(unsigned int pos)
     _array.erase(it);
 }
 
-unsigned int Array::GetNodeIndex(Node* node)
+unsigned int Array::GetNodeIndex(Node* node) const
 {
-    std::vector<Node*>::iterator it = std::find(_array.begin(), _array.end(), node);
+    std::vector<Node*>::const_iterator it = std::find(_array.begin(), _array.end(), node);
     return std::distance (_array.begin(), it);
 }