diff --git a/validate.hpp b/validate.hpp
index ec594ee..e2f9fe0 100644
--- a/validate.hpp
+++ b/validate.hpp
@@ -76,7 +76,7 @@ string format_guess_history(vector<int> sequence, vector<int> guess) {
 			if(sequence[j] == guess[i]) {
 				r[i] = YELLOW + to_string(guess[i]) + BACK;
 				guess[i] = -1;
-				sequence[i] = -1;
+				sequence[j] = -1;
 				break;
 			}
 		}