diff --git a/android/GnssDebug.cpp b/android/GnssDebug.cpp
index 45cde6be..823c9b17 100644
--- a/android/GnssDebug.cpp
+++ b/android/GnssDebug.cpp
@@ -114,6 +114,23 @@ Return<void> GnssDebug::getDebugData(getDebugData_cb _hidl_cb)
         data.position.bearingAccuracyDegrees = GNSS_DEBUG_UNKNOWN_BEARING_ACCURACY_DEG;
     }
 
+    if (data.position.horizontalAccuracyMeters <= 0 ||
+        data.position.horizontalAccuracyMeters > GNSS_DEBUG_UNKNOWN_HORIZONTAL_ACCURACY_METERS) {
+        data.position.horizontalAccuracyMeters = GNSS_DEBUG_UNKNOWN_HORIZONTAL_ACCURACY_METERS;
+    }
+    if (data.position.verticalAccuracyMeters <= 0 ||
+        data.position.verticalAccuracyMeters > GNSS_DEBUG_UNKNOWN_VERTICAL_ACCURACY_METERS) {
+        data.position.verticalAccuracyMeters = GNSS_DEBUG_UNKNOWN_VERTICAL_ACCURACY_METERS;
+    }
+    if (data.position.speedAccuracyMetersPerSecond <= 0 ||
+        data.position.speedAccuracyMetersPerSecond > GNSS_DEBUG_UNKNOWN_SPEED_ACCURACY_PER_SEC) {
+        data.position.speedAccuracyMetersPerSecond = GNSS_DEBUG_UNKNOWN_SPEED_ACCURACY_PER_SEC;
+    }
+    if (data.position.bearingAccuracyDegrees <= 0 ||
+        data.position.bearingAccuracyDegrees > GNSS_DEBUG_UNKNOWN_BEARING_ACCURACY_DEG) {
+        data.position.bearingAccuracyDegrees = GNSS_DEBUG_UNKNOWN_BEARING_ACCURACY_DEG;
+    }
+
     // time block
     if (reports.mTime.mValid) {
         data.time.timeEstimate = reports.mTime.timeEstimate;