diff --git a/src/org/fox/ttrss/FeedCategoriesFragment.java b/src/org/fox/ttrss/FeedCategoriesFragment.java
index 1cf7d4e6..90889255 100644
--- a/src/org/fox/ttrss/FeedCategoriesFragment.java
+++ b/src/org/fox/ttrss/FeedCategoriesFragment.java
@@ -326,7 +326,11 @@ public class FeedCategoriesFragment extends Fragment implements OnItemClickListe
 			}
 		}
 		
-		Collections.sort(m_cats, cmp);
+		try {
+			Collections.sort(m_cats, cmp);
+		} catch (IllegalArgumentException e) {
+			e.printStackTrace();
+		}
 		try {
 			m_adapter.notifyDataSetChanged();
 		} catch (NullPointerException e) {
diff --git a/src/org/fox/ttrss/FeedsFragment.java b/src/org/fox/ttrss/FeedsFragment.java
index 2f5a4545..24150c68 100644
--- a/src/org/fox/ttrss/FeedsFragment.java
+++ b/src/org/fox/ttrss/FeedsFragment.java
@@ -542,7 +542,12 @@ public class FeedsFragment extends Fragment implements OnItemClickListener, OnSh
 			}
 		}
 		
-		Collections.sort(m_feeds, cmp);
+		try {
+			Collections.sort(m_feeds, cmp);
+		} catch (IllegalArgumentException e) {
+			// sort order got changed in prefs or something
+			e.printStackTrace();
+		}
 		
 		try {
 			m_adapter.notifyDataSetChanged();