diff --git a/test/ruby/test_process.rb b/test/ruby/test_process.rb
index 6630cf048b..49c0fa143d 100644
--- a/test/ruby/test_process.rb
+++ b/test/ruby/test_process.rb
@@ -1236,15 +1236,17 @@ class TestProcess < Test::Unit::TestCase
   end if File.executable?("/bin/sh")
 
   def test_too_long_path
+    GC.start
     bug4314 = '[ruby-core:34842]'
-    exs = [NoMemoryError, Errno::ENOENT]
+    exs = [Errno::ENOENT]
     exs << Errno::E2BIG if defined?(Errno::E2BIG)
     assert_raise(*exs, bug4314) {Process.spawn("a" * 10_000_000)}
   end
 
   def test_too_long_path2
+    GC.start
     bug4315 = '[ruby-core:34833]'
-    exs = [NoMemoryError, Errno::ENOENT]
+    exs = [Errno::ENOENT]
     exs << Errno::E2BIG if defined?(Errno::E2BIG)
     assert_raise(*exs, bug4315) {Process.spawn('"a"|'*10_000_000)}
   end