diff --git a/src/meshio/xdmf/common.py b/src/meshio/xdmf/common.py
index fb7fcf3fe..b64e39346 100644
--- a/src/meshio/xdmf/common.py
+++ b/src/meshio/xdmf/common.py
@@ -35,7 +35,7 @@
 # alternatives as well.
 meshio_to_xdmf_type = {
     "vertex": ["Polyvertex"],
-    "line": ["Polyline"],
+    "line": ["Polyline", "PolyLine"],
     "line3": ["Edge_3"],
     "quad": ["Quadrilateral"],
     "quad8": ["Quadrilateral_8", "Quad_8"],