diff --git a/pipenv/environments.py b/pipenv/environments.py
index 79f66019..848fec87 100644
--- a/pipenv/environments.py
+++ b/pipenv/environments.py
@@ -247,7 +247,11 @@ PIP_EXISTS_ACTION = os.environ.get("PIP_EXISTS_ACTION", "w")
 Defaullts to (w)ipe
 """
 
-PIPENV_RESOLVE_VCS = _is_env_truthy(os.environ.get("PIPENV_RESOLVE_VCS", 'true'))
+PIPENV_RESOLVE_VCS = (
+    os.environ.get("PIPENV_RESOLVE_VCS") is None
+    or _is_env_truthy("PIPENV_RESOLVE_VCS")
+)
+
 """Tells Pipenv whether to resolve all VCS dependencies in full.
 
 As of Pipenv 2018.11.26, only editable VCS dependencies were resolved in full.