diff --git a/tiny_obj_loader.h b/tiny_obj_loader.h
index 187d2b8..d52e97c 100644
--- a/tiny_obj_loader.h
+++ b/tiny_obj_loader.h
@@ -2161,16 +2161,29 @@ bool LoadObj(attrib_t *attrib, std::vector<shape_t> *shapes,
     // Ignore unknown command.
   }
 
-  if (greatest_v_idx * 3 >= int(v.size())
-    || greatest_vn_idx * 3 >= int(vn.size())
-    || greatest_vt_idx * 2 >= int(vt.size()))
+  if (greatest_v_idx >= static_cast<int>(v.size() / 3))
   {
     if (err) {
       std::stringstream ss;
-      ss << "WARN: Indices do not match the data.\n" << std::endl;
+      ss << "WARN: Vertex indices out of bounds.\n" << std::endl;
+      (*err) += ss.str();
+    }
+  }
+  if (greatest_vn_idx >= static_cast<int>(vn.size() / 3))
+  {
+    if (err) {
+      std::stringstream ss;
+      ss << "WARN: Vertex normal indices out of bounds.\n" << std::endl;
+      (*err) += ss.str();
+    }
+  }
+  if (greatest_vt_idx >= static_cast<int>(vt.size() / 2))
+  {
+    if (err) {
+      std::stringstream ss;
+      ss << "WARN: Vertex texcoord indices out of bounds.\n" << std::endl;
       (*err) += ss.str();
     }
-    return false;
   }
 
   bool ret = exportGroupsToShape(&shape, faceGroup, lineGroup, tags, material,