1 files changed, 1 insertions, 1 deletions
diff --git a/run_tests.py b/run_tests.py
index 63eb62c..8ab53a1 100755
--- a/run_tests.py
+++ b/run_tests.py
@@ -151,7 +151,7 @@ def get_fake_env(sdir='', bdir=None, prefix='', opts=None):
     if opts is None:
         opts = get_fake_options(prefix)
     env = Environment(sdir, bdir, opts)
-    env.coredata.options[OptionKey('args', lang='c')] = FakeCompilerOptions()
+    env.coredata.optstore.set_value_object(OptionKey('args', lang='c'),  FakeCompilerOptions())
     env.machines.host.cpu_family = 'x86_64' # Used on macOS inside find_library
     # Invalidate cache when using a different Environment object.
     clear_meson_configure_class_caches()