diff --git a/src/main/c/hangman.c b/src/main/c/hangman.c
index 4a8045d..dd978ec 100644
--- a/src/main/c/hangman.c
+++ b/src/main/c/hangman.c
@@ -258,4 +258,6 @@ 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