diff --git a/HISTORY.rst b/HISTORY.rst
index b9d17e7..826dcee 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -3,6 +3,11 @@
 History
 -------
 
+0.4.9 (2018-03-14)
+--------------------
+
+* Add to show imported but not declared requirements for '--diff'  (spenly)
+
 0.4.8 (2017-06-30)
 --------------------
 
diff --git a/README.rst b/README.rst
index 139fa7d..8bcb24b 100644
--- a/README.rst
+++ b/README.rst
@@ -4,27 +4,27 @@
 
 .. image:: https://img.shields.io/travis/bndr/pipreqs.svg
         :target: https://travis-ci.org/bndr/pipreqs
-      
-        
+
+
 .. image:: https://img.shields.io/pypi/v/pipreqs.svg
         :target: https://pypi.python.org/pypi/pipreqs
 
-        
-.. image:: https://img.shields.io/coveralls/bndr/pipreqs.svg 
+
+.. image:: https://img.shields.io/coveralls/bndr/pipreqs.svg
         :target: https://coveralls.io/r/bndr/pipreqs
-  
-        
-.. image:: https://img.shields.io/pypi/l/pipreqs.svg 
+
+
+.. image:: https://img.shields.io/pypi/l/pipreqs.svg
         :target: https://pypi.python.org/pypi/pipreqs
 
-        
+
 
 Installation
 ------------
 
 ::
 
-    pip install pipreqs
+    pip install pipreqs-spenly
 
 Usage
 -----
@@ -65,10 +65,10 @@ Contents of requirements.txt
     wheel==0.23.0
     Yarg==0.1.9
     docopt==0.6.2
-    
+
 Why not pip freeze?
 -------------------
 
-- ``pip freeze`` only saves the packages that are installed with ``pip install`` in your environment. 
+- ``pip freeze`` only saves the packages that are installed with ``pip install`` in your environment.
 - ``pip freeze`` saves all packages in the environment including those that you don't use in your current project. (if you don't have virtualenv)
 - and sometimes you just need to create requirements.txt for a new project without installing modules.
diff --git a/pipreqs/pipreqs.py b/pipreqs/pipreqs.py
index 4b817c3..e21e22c 100755
--- a/pipreqs/pipreqs.py
+++ b/pipreqs/pipreqs.py
@@ -352,17 +352,26 @@ def compare_modules(file_, imports):
     imports = [imports[i]["name"] for i in range(len(imports))]
     modules = [modules[i]["name"] for i in range(len(modules))]
     modules_not_imported = set(modules) - set(imports)
-
-    return modules_not_imported
+    modules_not_declared = set(imports) - set(modules)
+    return modules_not_imported, modules_not_declared
 
 
 def diff(file_, imports):
     """Display the difference between modules in a file and imported modules."""  # NOQA
-    modules_not_imported = compare_modules(file_, imports)
+    modules_not_imported, modules_not_declared = compare_modules(file_, imports)
+    if modules_not_imported:
+        logging.info(
+            "The following modules are in {} but do not seem to be imported: \n"
+            "{}".format(file_, ", ".join(x for x in modules_not_imported)))
+    else:
+        logging.info("No module is in {} but do not seem to be imported.".format(file_))
 
-    logging.info(
-        "The following modules are in {} but do not seem to be imported: "
-        "{}".format(file_, ", ".join(x for x in modules_not_imported)))
+    if modules_not_declared:
+        logging.info(
+            "The following modules are not in {} but seem to be imported: \n"
+            "{}".format(file_, ", ".join(x for x in modules_not_declared)))
+    else:
+        logging.info("No module is not in {} but seem to be imported:.".format(file_))
 
 
 def clean(file_, imports):
diff --git a/setup.py b/setup.py
index 1afa42f..c02e453 100755
--- a/setup.py
+++ b/setup.py
@@ -21,7 +21,7 @@ requirements = [
 ]
 
 setup(
-    name='pipreqs',
+    name='pipreqs-spenly',
     version=__version__,
     description='Pip requirements.txt generator based on imports in project',
     long_description=readme + '\n\n' + history,