diff --git a/mobile/src/main/java/com/github/shadowsocks/ScannerActivity.kt b/mobile/src/main/java/com/github/shadowsocks/ScannerActivity.kt
index 11a96842..43fdb5a4 100644
--- a/mobile/src/main/java/com/github/shadowsocks/ScannerActivity.kt
+++ b/mobile/src/main/java/com/github/shadowsocks/ScannerActivity.kt
@@ -41,10 +41,7 @@ import com.github.shadowsocks.App.Companion.app
 import com.github.shadowsocks.database.Profile
 import com.github.shadowsocks.database.ProfileManager
 import com.github.shadowsocks.utils.resolveResourceId
-import com.google.zxing.BinaryBitmap
-import com.google.zxing.MultiFormatReader
-import com.google.zxing.RGBLuminanceSource
-import com.google.zxing.Result
+import com.google.zxing.*
 import com.google.zxing.common.HybridBinarizer
 import me.dm7.barcodescanner.zxing.ZXingScannerView
 
@@ -53,6 +50,8 @@ class ScannerActivity : AppCompatActivity(), ZXingScannerView.ResultHandler, Too
         private const val MY_PERMISSIONS_REQUEST_CAMERA = 1
         private const val REQUEST_IMPORT = 2
         private const val REQUEST_IMPORT_OR_FINISH = 3
+
+        private val hints by lazy { mapOf(Pair(DecodeHintType.TRY_HARDER, true)) }
     }
 
     private lateinit var scannerView: ZXingScannerView
@@ -151,7 +150,7 @@ class ScannerActivity : AppCompatActivity(), ZXingScannerView.ResultHandler, Too
                     val pixels = IntArray(bitmap.width * bitmap.height)
                     bitmap.getPixels(pixels, 0, bitmap.width, 0, 0, bitmap.width, bitmap.height)
                     Profile.findAll(reader.decode(BinaryBitmap(HybridBinarizer(
-                            RGBLuminanceSource(bitmap.width, bitmap.height, pixels)))).text).forEach {
+                            RGBLuminanceSource(bitmap.width, bitmap.height, pixels))), hints).text).forEach {
                         ProfileManager.createProfile(it)
                         success = true
                     }