diff --git a/11/TrieStringSet.java b/11/TrieStringSet.java
index 97378dccbe2657de953e874095199798071bbae0..b217f97aaed2660a3956d05f4a236b914440a983 100644
--- a/11/TrieStringSet.java
+++ b/11/TrieStringSet.java
@@ -85,7 +85,7 @@ public class TrieStringSet {
     }
 
     private void getAllWords(List<String> result, StringTrieNode curr, String acc) {
-        if (curr != null) {
+        if (curr == null) {
             return;
         }
         if (curr.isPresent) {
@@ -100,4 +100,4 @@ public class TrieStringSet {
 
     }
 
-}
\ No newline at end of file
+}