diff --git a/components/sensor/mmc5603.rst b/components/sensor/mmc5603.rst
index 3e88922aaa..824af7a910 100644
--- a/components/sensor/mmc5603.rst
+++ b/components/sensor/mmc5603.rst
@@ -21,6 +21,21 @@ for this sensor to work.
 
 .. _Adafruit: https://www.adafruit.com/product/5579
 
+.. warning::
+
+    There is an error in the axis labeling of the MMC5603 breakouts from Adafruit. 
+
+    Translation table:
+
+    | Axis labeling (wrong) | Sensor axis (correct & returned by ESPHome) |
+    |-----------------------|---------------------------------------------|
+    | X                     | Y                                           |
+    | Y                     | -X                                          |
+    | Z                     | Z                                           |
+
+
+    Please note that the returned values in the library are correct. Only the label on the breakout is wrong.
+
 .. code-block:: yaml
 
     # Example configuration entry