diff --git a/main.py b/main.py
index 99603fd..4a00f3b 100644
--- a/main.py
+++ b/main.py
@@ -25,9 +25,11 @@ def is_game_over():
 print(f"Can you make up {WORDS_TO_WIN} words from letters in word provided by me?")
 print(f"Your word is '{word}'")
 
-
 while not is_game_over():
     guess = input("Your next take: ")
+    if is_word_already_guessed(guess):
+        print("You've already guessed that word. Try a different one.")
+        continue
     if guess in full_list:
         guessed += 1
         guesses.append(guess)
@@ -38,3 +40,5 @@ def is_game_over():
     else:
         errors += 1
         print(f"Oops :( No such word, you have {ERRORS_TO_LOSE - errors} lives more")
+        print(f"Game over! You have run out of lives. Better luck next time!")
+        exit()
\ No newline at end of file