diff --git a/main.c b/main.c
index 947cff5..1ff63c8 100644
--- a/main.c
+++ b/main.c
@@ -178,7 +178,9 @@ void playMoves(game *g, char *moves) {
     if (tmp)
       *tmp &= (~bit);
     if (strlen(move) == 5) {
-      set = charToSet(g, move[4]);
+      char c = move[4];
+      c = toupper(c);
+      set = charToSet(g, c);
     }
     *set |= bit;