diff --git a/g5k/07_fault_injection_on_processes.ipynb b/g5k/07_fault_injection_on_processes.ipynb
index 71289825b431479020b331391b5ef314d41d21ad..9b182c30333c15853ded772fb42d2b47d97c9c1b 100644
--- a/g5k/07_fault_injection_on_processes.ipynb
+++ b/g5k/07_fault_injection_on_processes.ipynb
@@ -36,7 +36,7 @@
     "\n",
     "[Cron](https://man7.org/linux/man-pages/man8/cron.8.html) is a time-based job scheduler in Unix-like operating systems. It allows you to schedule and automate the execution of commands or scripts at specified intervals or specific times. Cron is commonly used for repetitive tasks, system maintenance, and scheduling periodic jobs.\n",
     "\n",
-    "All asynchronous tools shown here are based on cron. Because of that, for each event, the date is of the order of a minute.\n",
+    "All asynchronous tools shown here are based on cron. Because of that, for each event, the date is of the order of a minute and please take not that if a cron job is setup at HH:MM:50 for the minute after, it will be executed at HH:MM+1:00 (only 10 seconds after).\n",
     "\n",
     "\n",
     "[pgrep](https://man7.org/linux/man-pages/man1/pgrep.1.html) is a command-line utility in Unix-like operating systems that is used to search for and list the process IDs (PIDs) of running processes based on certain criteria. It allows you to find processes by their names, command lines, or other attributes.\n",
@@ -561,11 +561,12 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "registry_on_consumers = en.ProcessRegistry()\n",
-    "registry_on_consumers.build(\n",
-    "    \"'python3 /tmp/rabbitmq/consumer.py' | grep -v bin\",\n",
-    "    roles[\"consumer\"]\n",
+    "registry = en.ProcessRegistry()\n",
+    "registry.build(\n",
+    "    \"'python3 /tmp/rabbitmq' | grep -v bin\",\n",
+    "    roles\n",
     ")\n",
+    "registry_on_consumers = registry.lookup(roles[\"consumer\"])\n",
     "print(registry_on_consumers)"
    ]
   },
diff --git a/g5k/08_fault_injection_on_docker_containers.ipynb b/g5k/08_fault_injection_on_docker_containers.ipynb
index 4bcb29b8c2e791c2bd309c14077840dc6ed33114..df48298b8bf7fcbdac9907acca5833b0f61f9fc4 100644
--- a/g5k/08_fault_injection_on_docker_containers.ipynb
+++ b/g5k/08_fault_injection_on_docker_containers.ipynb
@@ -38,7 +38,7 @@
     "\n",
     "[Cron](https://man7.org/linux/man-pages/man8/cron.8.html) is a time-based job scheduler in Unix-like operating systems. It allows you to schedule and automate the execution of commands or scripts at specified intervals or specific times. Cron is commonly used for repetitive tasks, system maintenance, and scheduling periodic jobs.\n",
     "\n",
-    "All asynchronous tools shown here are based on cron. Because of that, for each event, the date is of the order of a minute."
+    "All asynchronous tools shown here are based on cron. Because of that, for each event, the date is of the order of a minute and please take not that if a cron job is setup at HH:MM:50 for the minute after, it will be executed at HH:MM+1:00 (only 10 seconds after)."
    ]
   },
   {
@@ -733,7 +733,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 86,
    "metadata": {},
    "outputs": [],
    "source": [