diff --git a/lib/parallel_tests/test/runner.rb b/lib/parallel_tests/test/runner.rb
index 55e48faf..fac95675 100644
--- a/lib/parallel_tests/test/runner.rb
+++ b/lib/parallel_tests/test/runner.rb
@@ -173,7 +173,7 @@ def sort_by_runtime(tests, runtimes, options={})
             allowed_missing -= 1 unless time = runtimes[test]
             if allowed_missing < 0
               log = options[:runtime_log] || runtime_log
-              raise "Runtime log file '#{log}' does not contain sufficient data to sort #{tests.size} test files, please update it."
+              raise "Runtime log file '#{log}' does not contain sufficient data to sort #{tests.size} test files, please update or remove it."
             end
             [test, time]
           end