diff --git a/commandrunner.py b/commandrunner.py
index 8530bb400..1d5defbf5 100755
--- a/commandrunner.py
+++ b/commandrunner.py
@@ -23,7 +23,7 @@ def run_command(source_dir, build_dir, subdir, command, arguments):
     env = {'MESON_SOURCE_ROOT' : source_dir,
            'MESON_BUILD_ROOT' : build_dir,
            'MESON_SUBDIR' : subdir
-        }
+          }
     cwd = os.path.join(source_dir, subdir)
     child_env = os.environ.copy()
     child_env.update(env)