diff --git a/xs/src/libslic3r/TriangleMesh.cpp b/xs/src/libslic3r/TriangleMesh.cpp
index ff3b17758..63c5a91b7 100644
--- a/xs/src/libslic3r/TriangleMesh.cpp
+++ b/xs/src/libslic3r/TriangleMesh.cpp
@@ -462,7 +462,7 @@ Pointf3s TriangleMesh::normals() const
     } else {
         Slic3r::Log::warn("TriangleMesh", "normals() requires repair()");
     }
-    return std::move(tmp);
+    return tmp;
 }
 
 Pointf3 TriangleMesh::size() const