diff --git a/doc/source/cookbook/fits_xray_images.ipynb b/doc/source/cookbook/fits_xray_images.ipynb
index 9124658317..edcc7c5295 100644
--- a/doc/source/cookbook/fits_xray_images.ipynb
+++ b/doc/source/cookbook/fits_xray_images.ipynb
@@ -157,6 +157,7 @@
     "    field_parameters={\"exposure_time\": exposure_time},\n",
     ")\n",
     "slc.set_log((\"fits\", \"flux\"), True)\n",
+    "slc.set_zlim((\"fits\", \"flux\"), 1e-5)\n",
     "slc.set_log((\"gas\", \"pseudo_pressure\"), False)\n",
     "slc.set_log((\"gas\", \"pseudo_entropy\"), False)\n",
     "slc.set_width(250.0)\n",
diff --git a/doc/source/examining/Loading_Generic_Particle_Data.ipynb b/doc/source/examining/Loading_Generic_Particle_Data.ipynb
index fbde73d8c9..2212c69fff 100644
--- a/doc/source/examining/Loading_Generic_Particle_Data.ipynb
+++ b/doc/source/examining/Loading_Generic_Particle_Data.ipynb
@@ -78,7 +78,7 @@
     "    [[min(ppx), max(ppx)], [min(ppy), max(ppy)], [min(ppz), max(ppz)]]\n",
     ")\n",
     "\n",
-    "ds = yt.load_particles(data, length_unit=parsec, mass_unit=1e8 * Msun, bbox=bbox)"
+    "ds = yt.load_particles(data, length_unit=1.0 * parsec, mass_unit=1e8 * Msun, bbox=bbox)"
    ]
   },
   {
@@ -184,7 +184,7 @@
     "}\n",
     "\n",
     "ds2 = yt.load_particles(\n",
-    "    data2, length_unit=parsec, mass_unit=1e8 * Msun, n_ref=256, bbox=bbox\n",
+    "    data2, length_unit=1.0 * parsec, mass_unit=1e8 * Msun, n_ref=256, bbox=bbox\n",
     ")"
    ]
   },