diff --git a/shared-bindings/gnss/GNSS.c b/shared-bindings/gnss/GNSS.c
index 59ec038dd1..99f2ba5c84 100644
--- a/shared-bindings/gnss/GNSS.c
+++ b/shared-bindings/gnss/GNSS.c
@@ -90,7 +90,7 @@ STATIC mp_obj_t gnss_make_new(const mp_obj_type_t *type, size_t n_args, const mp
     return MP_OBJ_FROM_PTR(self);
 }
 
-//|     def deinit(self) -> Any:
+//|     def deinit(self) -> None:
 //|         """Turn off the GNSS."""
 //|         ...
 //|
@@ -107,7 +107,7 @@ STATIC void check_for_deinit(gnss_obj_t *self) {
     }
 }
 
-//|     def update(self) -> Any:
+//|     def update(self) -> None:
 //|         """Update GNSS positioning information."""
 //|         ...
 //|
@@ -120,7 +120,7 @@ STATIC mp_obj_t gnss_obj_update(mp_obj_t self_in) {
 }
 MP_DEFINE_CONST_FUN_OBJ_1(gnss_update_obj, gnss_obj_update);
 
-//|     latitude: Any = ...
+//|     latitude: float = ...
 //|     """Latitude of current position in degrees (float)."""
 //|
 STATIC mp_obj_t gnss_obj_get_latitude(mp_obj_t self_in) {
@@ -137,7 +137,7 @@ const mp_obj_property_t gnss_latitude_obj = {
               (mp_obj_t)&mp_const_none_obj},
 };
 
-//|     longitude: Any = ...
+//|     longitude: float = ...
 //|     """Longitude of current position in degrees (float)."""
 //|
 STATIC mp_obj_t gnss_obj_get_longitude(mp_obj_t self_in) {
@@ -154,7 +154,7 @@ const mp_obj_property_t gnss_longitude_obj = {
               (mp_obj_t)&mp_const_none_obj},
 };
 
-//|     altitude: Any = ...
+//|     altitude: float = ...
 //|     """Altitude of current position in meters (float)."""
 //|
 STATIC mp_obj_t gnss_obj_get_altitude(mp_obj_t self_in) {
@@ -171,7 +171,7 @@ const mp_obj_property_t gnss_altitude_obj = {
               (mp_obj_t)&mp_const_none_obj},
 };
 
-//|     timestamp: Any = ...
+//|     timestamp: string = ...
 //|     """Time when the position data was updated."""
 //|
 STATIC mp_obj_t gnss_obj_get_timestamp(mp_obj_t self_in) {
@@ -190,7 +190,7 @@ const mp_obj_property_t gnss_timestamp_obj = {
               (mp_obj_t)&mp_const_none_obj},
 };
 
-//|     fix: Any = ...
+//|     fix: string = ...
 //|     """Fix mode."""
 //|
 STATIC mp_obj_t gnss_obj_get_fix(mp_obj_t self_in) {
diff --git a/shared-bindings/gnss/PositionFix.c b/shared-bindings/gnss/PositionFix.c
index 016603f049..52c0dd482b 100644
--- a/shared-bindings/gnss/PositionFix.c
+++ b/shared-bindings/gnss/PositionFix.c
@@ -32,17 +32,17 @@
 //|     def __init__(self):
 //|         """Enum-like class to define the position fix mode."""
 //|
-//|     INVALID: Any = ...
+//|     INVALID: gnss.PositionFix = ...
 //|     """No measurement.
 //|
 //|     :type gnss.PositionFix:"""
 //|
-//|     FIX_2D: Any = ...
+//|     FIX_2D: gnss.PositionFix = ...
 //|     """2D fix.
 //|
 //|     :type gnss.PositionFix:"""
 //|
-//|     FIX_3D: Any = ...
+//|     FIX_3D: gnss.PositionFix = ...
 //|     """3D fix.
 //|
 //|     :type gnss.PositionFix:"""
diff --git a/shared-bindings/gnss/SatelliteSystem.c b/shared-bindings/gnss/SatelliteSystem.c
index 6d3fb4782d..5ee7f0ffbf 100644
--- a/shared-bindings/gnss/SatelliteSystem.c
+++ b/shared-bindings/gnss/SatelliteSystem.c
@@ -32,27 +32,27 @@
 //|     def __init__(self):
 //|         """Enum-like class to define the satellite system type."""
 //|
-//|     GPS: Any = ...
+//|     GPS: gnss.SatelliteSystem = ...
 //|     """Global Positioning System.
 //|
 //|     :type gnss.SatelliteSystem:"""
 //|
-//|     GLONASS: Any = ...
+//|     GLONASS: gnss.SatelliteSystem = ...
 //|     """GLObal NAvigation Satellite System.
 //|
 //|     :type gnss.SatelliteSystem:"""
 //|
-//|     SBAS: Any = ...
+//|     SBAS: gnss.SatelliteSystem = ...
 //|     """Satellite Based Augmentation System.
 //|
 //|     :type gnss.SatelliteSystem:"""
 //|
-//|     QZSS_L1CA: Any = ...
+//|     QZSS_L1CA: gnss.SatelliteSystem = ...
 //|     """Quasi-Zenith Satellite System L1C/A.
 //|
 //|     :type gnss.SatelliteSystem:"""
 //|
-//|     QZSS_L1S: Any = ...
+//|     QZSS_L1S: gnss.SatelliteSystem = ...
 //|     """Quasi-Zenith Satellite System L1S.
 //|
 //|     :type gnss.SatelliteSystem:"""