diff --git a/app/src/main/java/gr/thmmy/mthmmy/activities/main/recent/RecentAdapter.java b/app/src/main/java/gr/thmmy/mthmmy/activities/main/recent/RecentAdapter.java
index 0bd447f6..8d66209e 100644
--- a/app/src/main/java/gr/thmmy/mthmmy/activities/main/recent/RecentAdapter.java
+++ b/app/src/main/java/gr/thmmy/mthmmy/activities/main/recent/RecentAdapter.java
@@ -15,6 +15,7 @@ import gr.thmmy.mthmmy.base.BaseApplication;
 import gr.thmmy.mthmmy.base.BaseFragment;
 import gr.thmmy.mthmmy.model.TopicSummary;
 import gr.thmmy.mthmmy.utils.RelativeTimeTextView;
+import timber.log.Timber;
 
 
 /**
@@ -45,7 +46,13 @@ class RecentAdapter extends RecyclerView.Adapter<RecentAdapter.ViewHolder> {
 
         String dateTimeString = recentList.get(position).getDateTimeModified();
         if(BaseApplication.getInstance().isDisplayRelativeTimeEnabled())
-            holder.mDateTimeView.setReferenceTime(Long.valueOf(dateTimeString));
+            try{
+                holder.mDateTimeView.setReferenceTime(Long.valueOf(dateTimeString));
+            }
+            catch(NumberFormatException e){
+                Timber.e(e, "Invalid number format.");
+                holder.mDateTimeView.setText(dateTimeString);
+            }
         else
             holder.mDateTimeView.setText(dateTimeString);
 
diff --git a/app/src/main/java/gr/thmmy/mthmmy/activities/main/unread/UnreadAdapter.java b/app/src/main/java/gr/thmmy/mthmmy/activities/main/unread/UnreadAdapter.java
index d213e480..9312178f 100644
--- a/app/src/main/java/gr/thmmy/mthmmy/activities/main/unread/UnreadAdapter.java
+++ b/app/src/main/java/gr/thmmy/mthmmy/activities/main/unread/UnreadAdapter.java
@@ -15,6 +15,7 @@ import gr.thmmy.mthmmy.base.BaseApplication;
 import gr.thmmy.mthmmy.base.BaseFragment;
 import gr.thmmy.mthmmy.model.TopicSummary;
 import gr.thmmy.mthmmy.utils.RelativeTimeTextView;
+import timber.log.Timber;
 
 class UnreadAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
     private final List<TopicSummary> unreadList;
@@ -69,8 +70,15 @@ class UnreadAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
             viewHolder.mTitleView.setText(unreadList.get(holder.getAdapterPosition()).getSubject());
 
             String dateTimeString=unreadList.get(holder.getAdapterPosition()).getDateTimeModified();
-            if(BaseApplication.getInstance().isDisplayRelativeTimeEnabled())
-                viewHolder.mDateTimeView.setReferenceTime(Long.valueOf(dateTimeString));
+            if(BaseApplication.getInstance().isDisplayRelativeTimeEnabled()){
+                try{
+                    viewHolder.mDateTimeView.setReferenceTime(Long.valueOf(dateTimeString));
+                }
+                catch(NumberFormatException e){
+                    Timber.e(e, "Invalid number format.");
+                    viewHolder.mDateTimeView.setText(dateTimeString);
+                }
+            }
             else
                 viewHolder.mDateTimeView.setText(dateTimeString);
 
@@ -89,14 +97,11 @@ class UnreadAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
             markReadViewHolder.text.setText(unreadList.get(holder.getAdapterPosition()).getSubject());
             markReadViewHolder.topic = unreadList.get(holder.getAdapterPosition());
 
-            markReadViewHolder.mView.setOnClickListener(new View.OnClickListener() {
-                @Override
-                public void onClick(View v) {
-                    if (null != mListener) {
-                        // Notify the active callbacks interface (the activity, if the
-                        // fragment is attached to one) that an item has been selected.
-                        markReadListener.onMarkReadInteraction(unreadList.get(holder.getAdapterPosition()).getTopicUrl());
-                    }
+            markReadViewHolder.mView.setOnClickListener(v -> {
+                if (null != mListener) {
+                    // Notify the active callbacks interface (the activity, if the
+                    // fragment is attached to one) that an item has been selected.
+                    markReadListener.onMarkReadInteraction(unreadList.get(holder.getAdapterPosition()).getTopicUrl());
                 }
             });
         }