diff --git a/holoviews/operation/datashader.py b/holoviews/operation/datashader.py
index c1b82bac6a..70742e5fb9 100644
--- a/holoviews/operation/datashader.py
+++ b/holoviews/operation/datashader.py
@@ -548,7 +548,7 @@ def _precompute(self, element):
         for c, dtype in zip(simplices.columns, simplices.dtypes):
             if dtype.kind != 'i':
                 simplices[c] = simplices[c].astype('int')
-        return {'mesh': mesh(verts, , 'simplices': simplices,
+        return {'mesh': mesh(verts, simplices), 'simplices': simplices,
                 'vertices': verts}