diff --git a/notebooks/unit6/unit6.ipynb b/notebooks/unit6/unit6.ipynb
index 5fa4f87f..e5d00817 100644
--- a/notebooks/unit6/unit6.ipynb
+++ b/notebooks/unit6/unit6.ipynb
@@ -363,8 +363,8 @@
       "cell_type": "markdown",
       "source": [
         "The observation space **is a dictionary with 3 different elements**:\n",
-        "- `achieved_goal`: (x,y,z) position of the goal.\n",
-        "- `desired_goal`: (x,y,z) distance between the goal position and the current object position.\n",
+        "- `achieved_goal`: (x,y,z) the current position of the end-effector.\n",
+        "- `desired_goal`: (x,y,z) the target position for the end-effector.\n",
         "- `observation`: position (x,y,z) and velocity of the end-effector (vx, vy, vz).\n",
         "\n",
         "Given it's a dictionary as observation, **we will need to use a MultiInputPolicy policy instead of MlpPolicy**."