1 files changed, 2 insertions, 0 deletions
diff --git a/mines.c b/mines.c
index d823341..e1441fa 100644
--- a/mines.c
+++ b/mines.c
@@ -279,6 +279,8 @@ static const char *validate_params(const game_params *params, bool full)
         return "Width times height must not be unreasonably large";
     if (params->n < 0)
 	return "Mine count may not be negative";
+    if (params->n < 1)
+        return "Number of mines must be greater than zero";
     if (params->n > params->w * params->h - 9)
 	return "Too many mines for grid size";