diff --git a/Sources/SwiftRPLidar/SwiftRPLidar.swift b/Sources/SwiftRPLidar/SwiftRPLidar.swift
index d83dce3..b92adcc 100644
--- a/Sources/SwiftRPLidar/SwiftRPLidar.swift
+++ b/Sources/SwiftRPLidar/SwiftRPLidar.swift
@@ -48,8 +48,8 @@ func processScan(raw: Data) throws -> LidarScan {
     if (raw[1] & 0b1) != 1 {
         throw RPLidarError.SCAN_ERROR(message: "Check bit not equal to 1")
     }
-    let angle = (Float(raw[1] >> 1) + Float(raw[2] << 7)) / 64
-    let distance = (Float(raw[3]) + Float(raw[4] << 8)) / 4
+    let angle = Float((Int(raw[1]) >> 1) + (Int(raw[2]) << 7)) / 64
+    let distance = Float(Int(raw[3]) + (Int(raw[4]) << 8)) / 4
     return LidarScan(newScan: newScan == 1, quality: quality, angle: angle, distance: distance)
 }