diff --git a/db/schema.rb b/db/schema.rb
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -209,7 +209,7 @@
     t.integer  "user_id",               limit: 4
     t.integer  "problem_id",            limit: 4
     t.integer  "language_id",           limit: 4
-    t.text     "source",                limit: 65535
+    t.text     "source",                limit: 16777215
     t.binary   "binary",                limit: 65535
     t.datetime "submitted_at"
     t.datetime "compiled_at"