diff --git a/docs/course-material/lab-1.rst b/docs/course-material/lab-1.rst
index 208bab9..4d7d752 100644
--- a/docs/course-material/lab-1.rst
+++ b/docs/course-material/lab-1.rst
@@ -86,6 +86,8 @@ Step 4. Connect and calibrate electronics
 
 **Important:** *To set a motor controller to a certain ID, click (short press) press to put the motor controller into id-setting mode, then click N more times in quick succession, where N is the desired ID. Eg, for a desired ID of 3, press 3 more times after the first click.*
 
+**Another gotcha:** *In all the other labs and reference material, the motors are indexed 1-8. In the C++ code, they are indexed 0-7. So if you set a motor ID to 1, you must call* ``bus.Get(0)``. *The same goes for all methods provided by the C610 Teensy library.*
+
 Step 3. Run the starter code
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
diff --git a/docs/course-material/lab-2.rst b/docs/course-material/lab-2.rst
index 5e45d45..0e34b1d 100644
--- a/docs/course-material/lab-2.rst
+++ b/docs/course-material/lab-2.rst
@@ -17,7 +17,11 @@ Step 1. Connect 2 more motors
 
 #. Connect power and encoder cables from motors to controllers.
 #. Connect power and CAN cables from controllers to Pupper PCB. Make sure the CAN cables go into the same row (row near the Teensy).
-#. Set the new motor controllers to have different IDs. Use 1, 2, and 3. **Important:** *To set a motor controller to a certain ID, click (short press) press to put the motor controller into id-setting mode, then click N more times in quick succession, where N is the desired ID. Eg, for a desired ID of 3, press 3 more times after the first click.*
+#. Set the new motor controllers to have different IDs. Use 1, 2, and 3.
+
+**Important:** *To set a motor controller to a certain ID, click (short press) press to put the motor controller into id-setting mode, then click N more times in quick succession, where N is the desired ID. Eg, for a desired ID of 3, press 3 more times after the first click.*
+
+**Recall:** *In all the other labs and reference material, the motors are indexed 1-8. In the C++ code, they are indexed 0-7. So if you set a motor ID to 1, you must call* ``bus.Get(0)``. *The same goes for all methods provided by the C610 Teensy library.*
 
 Step 1.5. Control the 3 motors together
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^