diff --git a/unequal.c b/unequal.c
index 1c8984a..3664788 100644
--- a/unequal.c
+++ b/unequal.c
@@ -1214,7 +1214,7 @@ static game_state *load_game(const game_params *params, const char *desc,
             why = "Too much data to fill grid"; goto fail;
         }
 
-        if (*p < '0' && *p > '9') {
+        if (*p < '0' || *p > '9') {
             why = "Expecting number in game description"; goto fail;
         }
         n = atoi(p);