diff --git a/i14/notebooks/xrf_tomo_align_and_normalise.ipynb b/i14/notebooks/xrf_tomo_align_and_normalise.ipynb
index f77eff4..554e079 100644
--- a/i14/notebooks/xrf_tomo_align_and_normalise.ipynb
+++ b/i14/notebooks/xrf_tomo_align_and_normalise.ipynb
@@ -414,7 +414,7 @@
     "    with h5py.File(outpath_nexus, \"w\") as fout:\n",
     "        fin.copy(fin[\"entry\"], fout, \"entry\")\n",
     "        del fout[\"entry/data/data\"]\n",
-    "        fout[\"entry/data/data\"] = aligned[:,ctop:-cbottom,cmin:cmax].astype(np.uint16)"
+    "        fout[\"entry/data/data\"] = aligned[:,ctop:-cbottom-1,cmin:cmax].astype(np.uint16)"
    ]
   }
  ],
diff --git a/i14/notebooks/xrf_tomo_align_initial.ipynb b/i14/notebooks/xrf_tomo_align_initial.ipynb
index 1e7f66f..8741bce 100644
--- a/i14/notebooks/xrf_tomo_align_initial.ipynb
+++ b/i14/notebooks/xrf_tomo_align_initial.ipynb
@@ -638,7 +638,7 @@
    },
    "outputs": [],
    "source": [
-    "vmp = to_align[:,ctop:-cbottom,cmin:cmax].sum(axis=2)\n",
+    "vmp = to_align[:,ctop:-cbottom-1,cmin:cmax].sum(axis=2)\n",
     "vmp_total = vmp.sum(axis=1)\n",
     "vmp_scale = vmp_total.reshape(vmp.shape[0],1,1) / vmp_total.mean()"
    ]
@@ -700,7 +700,7 @@
    "source": [
     "to_align = np.nan_to_num(np.array([ndi.shift(tomo[i], -shifts[i], order=1) for i in range(len(tomo))]))\n",
     "to_align *= sc.reshape(vmp.shape[0],1,1)\n",
-    "vmp_after = to_align[:,ctop:-cbottom,cmin:cmax].sum(axis=2)\n",
+    "vmp_after = to_align[:,ctop:-cbottom-1,cmin:cmax].sum(axis=2)\n",
     "fig, axes = plt.subplots(ncols=2, figsize=(10,5))\n",
     "axes[0].plot(vmp_after.T / vmp_after.max())\n",
     "axes[1].imshow(vmp_after.T /  vmp_after.max())\n",