diff --git a/examples/hello_wexpect.py b/examples/hello_wexpect.py
index c6ce839..d306bad 100644
--- a/examples/hello_wexpect.py
+++ b/examples/hello_wexpect.py
@@ -12,7 +12,8 @@ child = wexpect.spawn('cmd.exe')
 child.expect('>')
 
 # Prints the cmd's start message
-print(child.before)
+print(child.before, end='')
+print(child.after, end='')
 
 # run list directory command
 child.sendline('ls')
@@ -21,7 +22,8 @@ child.sendline('ls')
 child.expect('>')
 
 # Prints content of the directory
-print(child.before)
+print(child.before, end='')
+print(child.after, end='')
 
 # Exit from cmd
 child.sendline('exit')
diff --git a/requirements.txt b/requirements.txt
index 5cd9eeb..633ed61 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1,2 @@
-pywin32>=220
\ No newline at end of file
+pywin32>=220
+psutil>=5.0.0
diff --git a/tests/test_expect.py b/tests/test_expect.py
index e2dd69a..e721301 100644
--- a/tests/test_expect.py
+++ b/tests/test_expect.py
@@ -267,7 +267,8 @@ class ExpectTestCase (PexpectTestCase.PexpectTestCase):
     def test_buffer_interface(self):
         p = wexpect.spawn('cat', timeout=5)
         p.sendline ('Hello')
-        p.expect ('Hello')
+        p.expect('Hello')
+        p.expect('lo')
         assert len(p.buffer)
         p.buffer = 'Testing'
         p.sendeof ()