diff --git a/diff_cover/git_diff.py b/diff_cover/git_diff.py
index 871e5cec..92c743c5 100644
--- a/diff_cover/git_diff.py
+++ b/diff_cover/git_diff.py
@@ -27,8 +27,10 @@ def diff_committed(self, compare_branch='origin/master'):
         to stderr.
         """
         return execute([
-            'git', '-c', 'diff.mnemonicprefix=no', 'diff',
-            "{branch}...HEAD".format(branch=compare_branch),
+            'git',
+            '-c', 'diff.mnemonicprefix=no',
+            '-c', 'diff.noprefix=no',
+            'diff', '{branch}...HEAD'.format(branch=compare_branch),
             '--no-color',
             '--no-ext-diff'
         ])[0]
@@ -41,8 +43,14 @@ def diff_unstaged(self):
         Raises a `GitDiffError` if `git diff` outputs anything
         to stderr.
         """
-        return execute(['git', '-c', 'diff.mnemonicprefix=no', 'diff',
-                        '--no-color', '--no-ext-diff'])[0]
+        return execute([
+            'git',
+            '-c', 'diff.mnemonicprefix=no',
+            '-c', 'diff.noprefix=no',
+            'diff',
+            '--no-color',
+            '--no-ext-diff'
+        ])[0]
 
     def diff_staged(self):
         """
@@ -52,5 +60,12 @@ def diff_staged(self):
         Raises a `GitDiffError` if `git diff` outputs anything
         to stderr.
         """
-        return execute(['git', '-c', 'diff.mnemonicprefix=no', 'diff',
-                        '--cached', '--no-color', '--no-ext-diff'])[0]
+        return execute([
+            'git',
+            '-c', 'diff.mnemonicprefix=no',
+            '-c', 'diff.noprefix=no',
+            'diff',
+            '--cached',
+            '--no-color',
+            '--no-ext-diff'
+        ])[0]
diff --git a/diff_cover/tests/test_git_diff.py b/diff_cover/tests/test_git_diff.py
index dca5cde3..55128ebe 100644
--- a/diff_cover/tests/test_git_diff.py
+++ b/diff_cover/tests/test_git_diff.py
@@ -27,8 +27,9 @@ def test_diff_committed(self):
         self.assertEqual(output, 'test output')
 
         # Expect that the correct command was executed
-        expected = ['git', '-c', 'diff.mnemonicprefix=no', 'diff',
-                    'origin/master...HEAD', '--no-color', '--no-ext-diff']
+        expected = ['git', '-c', 'diff.mnemonicprefix=no', '-c',
+                    'diff.noprefix=no', 'diff', 'origin/master...HEAD',
+                    '--no-color', '--no-ext-diff']
         self.subprocess.Popen.assert_called_with(
             expected, stdout=self.subprocess.PIPE, stderr=self.subprocess.PIPE
         )
@@ -41,8 +42,8 @@ def test_diff_unstaged(self):
         self.assertEqual(output, 'test output')
 
         # Expect that the correct command was executed
-        expected = ['git', '-c', 'diff.mnemonicprefix=no', 'diff',
-                    '--no-color', '--no-ext-diff']
+        expected = ['git', '-c', 'diff.mnemonicprefix=no', '-c',
+                    'diff.noprefix=no', 'diff', '--no-color', '--no-ext-diff']
         self.subprocess.Popen.assert_called_with(
             expected, stdout=self.subprocess.PIPE, stderr=self.subprocess.PIPE
         )
@@ -55,8 +56,9 @@ def test_diff_staged(self):
         self.assertEqual(output, 'test output')
 
         # Expect that the correct command was executed
-        expected = ['git', '-c', 'diff.mnemonicprefix=no', 'diff', '--cached',
-                    '--no-color', '--no-ext-diff']
+        expected = ['git', '-c', 'diff.mnemonicprefix=no', '-c',
+                    'diff.noprefix=no', 'diff', '--cached', '--no-color',
+                    '--no-ext-diff']
         self.subprocess.Popen.assert_called_with(
             expected, stdout=self.subprocess.PIPE, stderr=self.subprocess.PIPE
         )
@@ -71,8 +73,9 @@ def test_diff_committed_compare_branch(self):
         self.assertEqual(output, 'test output')
 
         # Expect that the correct command was executed
-        expected = ['git', '-c', 'diff.mnemonicprefix=no', 'diff',
-                    'release...HEAD', '--no-color', '--no-ext-diff']
+        expected = ['git', '-c', 'diff.mnemonicprefix=no', '-c',
+                    'diff.noprefix=no', 'diff', 'release...HEAD', '--no-color',
+                    '--no-ext-diff']
         self.subprocess.Popen.assert_called_with(
             expected, stdout=self.subprocess.PIPE, stderr=self.subprocess.PIPE
         )
diff --git a/diff_cover/tests/test_integration.py b/diff_cover/tests/test_integration.py
index 5b0f7653..f0a2df34 100644
--- a/diff_cover/tests/test_integration.py
+++ b/diff_cover/tests/test_integration.py
@@ -166,7 +166,8 @@ def _set_git_diff_output(self, stdout, stderr, returncode=0):
         a phony directory.
         """
         def patch_diff(command, **kwargs):
-            if command[0:4] == ['git', '-c', 'diff.mnemonicprefix=no', 'diff']:
+            if command[0:6] == ['git', '-c', 'diff.mnemonicprefix=no', '-c',
+                                'diff.noprefix=no', 'diff']:
                 mock = Mock()
                 mock.communicate.return_value = (stdout, stderr)
                 mock.returncode = returncode