diff --git a/clen_tools/hewl.cell b/clen_tools/hewl.cell
deleted file mode 100644
index 8ab4b32..0000000
--- a/clen_tools/hewl.cell
+++ /dev/null
@@ -1,11 +0,0 @@
-CrystFEL unit cell file version 1.0
-
-lattice_type = tetragonal
-unique_axis = c
-centering = P
-a = 79.20 A
-b = 79.20 A
-c = 38.20 A
-al = 90.00 deg
-be = 90.00 deg
-ga = 90.00 deg