diff --git a/shared-bindings/rgbmatrix/RGBMatrix.c b/shared-bindings/rgbmatrix/RGBMatrix.c
index 1bbd169654..decf94f679 100644
--- a/shared-bindings/rgbmatrix/RGBMatrix.c
+++ b/shared-bindings/rgbmatrix/RGBMatrix.c
@@ -128,7 +128,7 @@ STATIC void preflight_pins_or_throw(uint8_t clock_pin, uint8_t *rgb_pins, uint8_
     }
 }
 
-//|     def __init__(self, *, width: Any, bit_depth: Any, rgb_pins: Any, addr_pins: Any, clock_pin: Any, latch_pin: Any, output_enable_pin: Any, doublebuffer: Any = True, framebuffer: Any = None, height: Any = 0):
+//|     def __init__(self, *, width: int, bit_depth: List[digitalio.DigitalInOut], rgb_pins: List[digitalio.DigitalInOut], addr_pins: List[digitalio.DigitalInOut], clock_pin: digitalio.DigitalInOut, latch_pin: digitalio.DigitalInOut, output_enable_pin: digitalio.DigitalInOut, doublebuffer: bool = True, framebuffer: WriteableBuffer = None, height: int = 0):
 //|         """Create a RGBMatrix object with the given attributes.  The height of
 //|         the display is determined by the number of rgb and address pins:
 //|         len(rgb_pins) // 3 * 2 ** len(address_pins).  With 6 RGB pins and 4
@@ -237,7 +237,7 @@ STATIC mp_obj_t rgbmatrix_rgbmatrix_make_new(const mp_obj_type_t *type, size_t n
     return MP_OBJ_FROM_PTR(self);
 }
 
-//|     def deinit(self) -> Any:
+//|     def deinit(self) -> None:
 //|         """Free the resources (pins, timers, etc.) associated with this
 //|         rgbmatrix instance.  After deinitialization, no further operations
 //|         may be performed."""
@@ -257,7 +257,7 @@ static void check_for_deinit(rgbmatrix_rgbmatrix_obj_t *self) {
     }
 }
 
-//|     brightness: Any = ...
+//|     brightness: Optional[float] = ...
 //|     """In the current implementation, 0.0 turns the display off entirely
 //|     and any other value up to 1.0 turns the display on fully."""
 //|
@@ -288,9 +288,10 @@ const mp_obj_property_t rgbmatrix_rgbmatrix_brightness_obj = {
               (mp_obj_t)&mp_const_none_obj},
 };
 
-//|     def refresh(self) -> Any: ...
-//|     """Transmits the color data in the buffer to the pixels so that
-//|     they are shown."""
+//|     def refresh(self) -> None:
+//|         """Transmits the color data in the buffer to the pixels so that
+//|         they are shown."""
+//|         ...
 //|
 STATIC mp_obj_t rgbmatrix_rgbmatrix_refresh(mp_obj_t self_in) {
     rgbmatrix_rgbmatrix_obj_t *self = (rgbmatrix_rgbmatrix_obj_t*)self_in;