diff --git a/test/mac/gyptest-objc-gc.py b/test/mac/gyptest-objc-gc.py
index 70ec757..0cec458 100644
--- a/test/mac/gyptest-objc-gc.py
+++ b/test/mac/gyptest-objc-gc.py
@@ -9,6 +9,7 @@
 """
 
 import TestGyp
+import TestMac
 
 import sys
 
@@ -17,29 +18,34 @@
   test = TestGyp.TestGyp(formats=['ninja', 'make', 'xcode'],
                          match = lambda a, b: True)
 
-  CHDIR = 'objc-gc'
-  test.run_gyp('test.gyp', chdir=CHDIR)
+  # Xcode 5.1 removed support for garbage-collection:
+  #   error: garbage collection is no longer supported
+  if TestMac.Xcode.Version() < '0510':
 
-  build_error_code = {
-    'xcode': [1, 65],  # 1 for xcode 3, 65 for xcode 4 (see `man sysexits`)
-    'make': 2,
-    'ninja': 1,
-  }[test.format]
+    CHDIR = 'objc-gc'
+    test.run_gyp('test.gyp', chdir=CHDIR)
 
-  test.build('test.gyp', 'gc_exe_fails', chdir=CHDIR, status=build_error_code)
-  test.build(
-      'test.gyp', 'gc_off_exe_req_lib', chdir=CHDIR, status=build_error_code)
+    build_error_code = {
+      'xcode': [1, 65],  # 1 for xcode 3, 65 for xcode 4 (see `man sysexits`)
+      'make': 2,
+      'ninja': 1,
+    }[test.format]
 
-  test.build('test.gyp', 'gc_req_exe', chdir=CHDIR)
-  test.run_built_executable('gc_req_exe', chdir=CHDIR, stdout="gc on: 1\n")
+    test.build('test.gyp', 'gc_exe_fails', chdir=CHDIR, status=build_error_code)
+    test.build(
+        'test.gyp', 'gc_off_exe_req_lib', chdir=CHDIR, status=build_error_code)
 
-  test.build('test.gyp', 'gc_exe_req_lib', chdir=CHDIR)
-  test.run_built_executable('gc_exe_req_lib', chdir=CHDIR, stdout="gc on: 1\n")
+    test.build('test.gyp', 'gc_req_exe', chdir=CHDIR)
+    test.run_built_executable('gc_req_exe', chdir=CHDIR, stdout="gc on: 1\n")
 
-  test.build('test.gyp', 'gc_exe', chdir=CHDIR)
-  test.run_built_executable('gc_exe', chdir=CHDIR, stdout="gc on: 1\n")
+    test.build('test.gyp', 'gc_exe_req_lib', chdir=CHDIR)
+    test.run_built_executable(
+        'gc_exe_req_lib', chdir=CHDIR, stdout="gc on: 1\n")
 
-  test.build('test.gyp', 'gc_off_exe', chdir=CHDIR)
-  test.run_built_executable('gc_off_exe', chdir=CHDIR, stdout="gc on: 0\n")
+    test.build('test.gyp', 'gc_exe', chdir=CHDIR)
+    test.run_built_executable('gc_exe', chdir=CHDIR, stdout="gc on: 1\n")
+
+    test.build('test.gyp', 'gc_off_exe', chdir=CHDIR)
+    test.run_built_executable('gc_off_exe', chdir=CHDIR, stdout="gc on: 0\n")
 
   test.pass_test()