diff --git a/app/src/main/java/com/example/android/audacity/adapters/ChallengesAdapter.java b/app/src/main/java/com/example/android/audacity/adapters/ChallengesAdapter.java
index 8d92e92..f0692da 100644
--- a/app/src/main/java/com/example/android/audacity/adapters/ChallengesAdapter.java
+++ b/app/src/main/java/com/example/android/audacity/adapters/ChallengesAdapter.java
@@ -51,7 +51,7 @@ public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
 
     @Override
     public int getItemCount() {
-        return mChallengeData.size();
+        return mChallengeData == null ? 0 : mChallengeData.size();
     }
 
     public class ViewHolder extends RecyclerView.ViewHolder {
diff --git a/app/src/main/java/com/example/android/audacity/adapters/HottestAppAdapter.java b/app/src/main/java/com/example/android/audacity/adapters/HottestAppAdapter.java
index c2254b3..f72592d 100644
--- a/app/src/main/java/com/example/android/audacity/adapters/HottestAppAdapter.java
+++ b/app/src/main/java/com/example/android/audacity/adapters/HottestAppAdapter.java
@@ -51,7 +51,7 @@ public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
 
     @Override
     public int getItemCount() {
-        return mHottestAppData.size();
+        return mHottestAppData == null ? 0 : mHottestAppData.size();
     }
 
     public class ViewHolder extends RecyclerView.ViewHolder {