diff --git a/shared-bindings/busio/I2C.c b/shared-bindings/busio/I2C.c
index c93566c0b62e4..5fa62f9df3859 100644
--- a/shared-bindings/busio/I2C.c
+++ b/shared-bindings/busio/I2C.c
@@ -112,7 +112,7 @@ static void check_lock(busio_i2c_obj_t *self) {
     }
 }
 
-//|     def probe(self, address: int) -> List[int]:
+//|     def probe(self, address: int) -> bool:
 //|         """Check if a device at the specified address responds.
 //|
 //|         :param int address: 7-bit device address