diff --git a/platformio/commands/run.py b/platformio/commands/run.py
index 3309cf07..95bd4ca6 100644
--- a/platformio/commands/run.py
+++ b/platformio/commands/run.py
@@ -283,7 +283,7 @@ def print_header(label, is_error=False):
 def check_project_defopts(config):
     if not config.has_section("platformio"):
         return True
-    known = ("home_dir", "lib_dir", "libdeps_dir", "src_dir", "env_dir",
+    known = ("home_dir", "lib_dir", "libdeps_dir", "src_dir", "envs_dir",
              "data_dir", "test_dir", "env_default")
     unknown = set([k for k, _ in config.items("platformio")]) - set(known)
     if not unknown: