diff --git a/app/src/main/java/org/openobservatory/ooniprobe/activity/MainActivity.java b/app/src/main/java/org/openobservatory/ooniprobe/activity/MainActivity.java
index 2cd31860e..ab002d2bd 100644
--- a/app/src/main/java/org/openobservatory/ooniprobe/activity/MainActivity.java
+++ b/app/src/main/java/org/openobservatory/ooniprobe/activity/MainActivity.java
@@ -202,6 +202,7 @@ private void onPeriodicWorkComplete(WorkInfo workInfo) {
     }
 
     public void fetchManualUpdate() {
+        updatesViewModel.clearDescriptors();
         OneTimeWorkRequest manualWorkRequest = new OneTimeWorkRequest.Builder(ManualUpdateDescriptorsWorker.class)
                 .setConstraints(
                         new Constraints.Builder()
diff --git a/app/src/main/java/org/openobservatory/ooniprobe/activity/reviewdescriptorupdates/AvailableUpdatesViewModel.kt b/app/src/main/java/org/openobservatory/ooniprobe/activity/reviewdescriptorupdates/AvailableUpdatesViewModel.kt
index 7468c8c2d..34435682a 100644
--- a/app/src/main/java/org/openobservatory/ooniprobe/activity/reviewdescriptorupdates/AvailableUpdatesViewModel.kt
+++ b/app/src/main/java/org/openobservatory/ooniprobe/activity/reviewdescriptorupdates/AvailableUpdatesViewModel.kt
@@ -10,14 +10,16 @@ import javax.inject.Singleton
 @Singleton
 class AvailableUpdatesViewModel @Inject() constructor(var gson: Gson) : ViewModel() {
     var descriptors: MutableLiveData<List<ITestDescriptor>> = MutableLiveData()
-    var descriptorString: MutableLiveData<String> = MutableLiveData()
 
     fun setDescriptorsWith(descriptorJson: String) {
-        descriptorString.value = descriptorJson
         descriptors.value = gson.fromJson(descriptorJson, Array<ITestDescriptor>::class.java).toList()
     }
 
     fun getUpdatedDescriptor(runId: Long): String {
         return gson.toJson(arrayOf(descriptors.value?.find { it.runId == runId }))
     }
+
+    fun clearDescriptors() {
+        descriptors.value = emptyList()
+    }
 }
\ No newline at end of file