diff --git a/test/ruby/test_symbol.rb b/test/ruby/test_symbol.rb
index 569b888f31..ff246f137a 100644
--- a/test/ruby/test_symbol.rb
+++ b/test/ruby/test_symbol.rb
@@ -525,10 +525,12 @@ class TestSymbol < Test::Unit::TestCase
 
   def test_symbol_fstr_leak
     bug10686 = '[ruby-core:67268] [Bug #10686]'
-    x = x = 0
-    assert_no_memory_leak([], '200_000.times { |i| i.to_s.to_sym }; GC.start', "#{<<-"begin;"}\n#{<<-"end;"}", bug10686, limit: 1.71, rss: true, timeout: 20)
+    assert_no_memory_leak([], "#{<<~"begin;"}\n#{<<~'else;'}", "#{<<~'end;'}", bug10686, limit: 1.71, rss: true, timeout: 20)
     begin;
-      200_000.times { |i| (i + 200_000).to_s.to_sym }
+      n = 100_000
+      n.times { |i| i.to_s.to_sym }
+    else;
+      (2 * n).times { |i| (i + n).to_s.to_sym }
     end;
   end