diff --git a/src/main.rs b/src/main.rs
index 6d59968..519d88e 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -52,12 +52,20 @@ fn check_exact(word: &String, exact: &str) -> bool {
 
 fn check_close(word: &String, close: &Vec<(char, usize)>) -> bool {
     for (character, index) in close {
+        // igore initialization value
         if *character == '.' {
             continue;
         }
+
+        // character cant be in the same index
         if *character == word.chars().nth(*index).unwrap() {
             return false;
         }
+
+        // character must appear in word to be valid guess
+        if !word.contains(*character) {
+            return false;
+        }
     }
     return true;
 }