diff --git a/MeshLib/IO/Legacy/MeshIO.cpp b/MeshLib/IO/Legacy/MeshIO.cpp
index 24664107dab6880d1189ed149c87e181581f110c..016fd45177ce0e427ad04ce187de62f6dae5c086 100644
--- a/MeshLib/IO/Legacy/MeshIO.cpp
+++ b/MeshLib/IO/Legacy/MeshIO.cpp
@@ -38,7 +38,7 @@ namespace IO
 namespace Legacy {
 
 MeshIO::MeshIO()
-    : _mesh(NULL)
+    : _mesh(nullptr)
 {
 }