diff --git a/pipenv/core.py b/pipenv/core.py
index 672f0004..fe80e0c1 100644
--- a/pipenv/core.py
+++ b/pipenv/core.py
@@ -1168,6 +1168,12 @@ def do_lock(verbose=False, system=False, clear=False, pre=False, keep_outdated=F
                 if not is_pinned(section[package_specified]):
                     lockfile[section_name][package_specified] = cached_lockfile[section_name][package_specified]
 
+
+    # Overwrite any develop packages with default packages.
+    for default_package in lockfile['default']:
+        if default_package in lockfile['develop']:
+            lockfile['develop'][default_package] = lockfile['default'][default_package]
+
     # Run the PEP 508 checker in the virtualenv, add it to the lockfile.
     cmd = '"{0}" {1}'.format(which('python', allow_global=system), shellquote(pep508checker.__file__.rstrip('cdo')))
     c = delegator.run(cmd)