diff --git a/app/src/main/java/com/example/hpostesting/presentation/diagnostics/DiagnosticsFragment.kt b/app/src/main/java/com/example/hpostesting/presentation/diagnostics/DiagnosticsFragment.kt
index 0f0160d..1b949a6 100644
--- a/app/src/main/java/com/example/hpostesting/presentation/diagnostics/DiagnosticsFragment.kt
+++ b/app/src/main/java/com/example/hpostesting/presentation/diagnostics/DiagnosticsFragment.kt
@@ -131,7 +131,7 @@ class DiagnosticsFragment : Fragment() {
 
                     if (resultData.contains("END") || fullReadOutput.contains("END")) {
                         diagnosticsViewModel.addDiagnosticsDataToDb(DiagnosticsData(
-                            deviceId = sharedPreferences.getString("DEVICE_ID", "").toString(),
+                            deviceId = sharedPreferences.getString(Constants.DEVICE_ID, "").toString(),
                             deviceData = resultData,
                             runTime = SimpleDateFormat(
                                 "yyyy-MM-dd HH:mm:ss", Locale.getDefault()