diff --git a/src/main/c/hangman.c b/src/main/c/hangman.c
index 1182223..2c6f2ce 100644
--- a/src/main/c/hangman.c
+++ b/src/main/c/hangman.c
@@ -257,4 +257,6 @@ void add_guessed_letter(char* guessed_letters, char guessed_letter){
 			return;
 		}
 	}
+	guessed_letters[strlen(guessed_letters)] = guessed_letter;
+	guessed_letters[strlen(guessed_letters) + 1] = '\0';
 }
\ No newline at end of file