diff --git a/pipenv/cli/command.py b/pipenv/cli/command.py
index ade86c6f69..34c45c7673 100644
--- a/pipenv/cli/command.py
+++ b/pipenv/cli/command.py
@@ -5,7 +5,7 @@
 import sys
 
 from click import (
-    argument, echo, edit, group, option, pass_context, secho, version_option, Choice
+    argument, echo, edit, group, option, pass_context, secho, types, version_option, Choice
 )
 
 from ..__version__ import __version__
@@ -459,7 +459,8 @@ def run(state, command, args):
 @option(
     "--unused",
     nargs=1,
-    default=False,
+    default="",
+    type=types.STRING,
     help="Given a code path, show potentially unused dependencies.",
 )
 @option(
diff --git a/pipenv/cli/options.py b/pipenv/cli/options.py
index 35af39ca56..7e0652a90d 100644
--- a/pipenv/cli/options.py
+++ b/pipenv/cli/options.py
@@ -235,9 +235,10 @@ def callback(ctx, param, value):
         if value is not None:
             state.python = validate_python_path(ctx, param, value)
         return value
-    return option("--python", default=False, nargs=1, callback=callback,
+    return option("--python", default="", nargs=1, callback=callback,
                   help="Specify which version of Python virtualenv should use.",
-                  expose_value=False, allow_from_autoenv=False)(f)
+                  expose_value=False, allow_from_autoenv=False,
+                  type=click.types.STRING)(f)
 
 
 def pypi_mirror_option(f):
@@ -318,8 +319,9 @@ def callback(ctx, param, value):
         if value:
             state.installstate.requirementstxt = value
         return value
-    return option("--requirements", "-r", nargs=1, default=False, expose_value=False,
-                  help="Import a requirements.txt file.", callback=callback)(f)
+    return option("--requirements", "-r", nargs=1, default="", expose_value=False,
+                  help="Import a requirements.txt file.", callback=callback,
+                  type=click.types.STRING)(f)
 
 
 def emit_requirements_flag(f):
@@ -358,9 +360,9 @@ def callback(ctx, param, value):
         if value:
             state.installstate.code = value
         return value
-    return option("--code", "-c", nargs=1, default=False, help="Install packages "
+    return option("--code", "-c", nargs=1, default="", help="Install packages "
                   "automatically discovered from import statements.", callback=callback,
-                  expose_value=False)(f)
+                  expose_value=False, type=click.types.STRING)(f)
 
 
 def deploy_option(f):