diff --git a/osc/core.py b/osc/core.py
index 3beb340f..de95eb84 100644
--- a/osc/core.py
+++ b/osc/core.py
@@ -1372,10 +1372,10 @@ class Package:
                     diff.append('Binary file \'%s\' %s.\n' % (origname, what))
                     return diff
                 tmpl = '+%s'
-                ltmpl = '@@ -0,0 +1,%d  @@\n'
+                ltmpl = '@@ -0,0 +1,%d @@\n'
                 if not add:
                     tmpl = '-%s'
-                    ltmpl = '@@ -1,%d +0,0  @@\n'
+                    ltmpl = '@@ -1,%d +0,0 @@\n'
                 lines = [tmpl % i for i in open(fname, 'r').readlines()]
                 if len(lines):
                     diff.append(ltmpl % len(lines))
diff --git a/tests/test_difffiles.py b/tests/test_difffiles.py
index 2719d9de..c8bed9b7 100644
--- a/tests/test_difffiles.py
+++ b/tests/test_difffiles.py
@@ -30,7 +30,7 @@ class TestDiffFiles(OscTestCase):
         exp = """%s
 --- toadd1\t(revision 0)
 +++ toadd1\t(revision 0)
-@@ -0,0 +1,1  @@
+@@ -0,0 +1,1 @@
 +toadd1
 """ % (TestDiffFiles.diff_hdr % 'toadd1')
         self.__check_diff(p, exp, None)
@@ -43,7 +43,7 @@ class TestDiffFiles(OscTestCase):
         exp = """%s
 --- somefile\t(revision 2)
 +++ somefile\t(working copy)
-@@ -1,1 +0,0  @@
+@@ -1,1 +0,0 @@
 -some content
 """ % (TestDiffFiles.diff_hdr % 'somefile')
         self.__check_diff(p, exp, None)
@@ -130,7 +130,7 @@ class TestDiffFiles(OscTestCase):
 %s
 --- somefile\t(revision 2)
 +++ somefile\t(working copy)
-@@ -1,1 +0,0  @@
+@@ -1,1 +0,0 @@
 -some content
 """ % (TestDiffFiles.diff_hdr % 'nochange', TestDiffFiles.diff_hdr % 'somefile')
         self.__check_diff(p, exp, None)
@@ -190,7 +190,7 @@ Binary file 'binary' has changed.
 %s
 --- toadd1\t(revision 0)
 +++ toadd1\t(revision 0)
-@@ -0,0 +1,1  @@
+@@ -0,0 +1,1 @@
 +toadd1
 """ % (TestDiffFiles.diff_hdr % 'merge', TestDiffFiles.diff_hdr % 'toadd1')
         self.__check_diff(p, exp, 3)
@@ -206,7 +206,7 @@ Binary file 'binary' has changed.
         exp = """%s
 --- toadd1\t(revision 0)
 +++ toadd1\t(revision 0)
-@@ -0,0 +1,1  @@
+@@ -0,0 +1,1 @@
 +toadd1
 """ % (TestDiffFiles.diff_hdr % 'toadd1')
         self.__check_diff(p, exp, 3)
@@ -224,7 +224,7 @@ Binary file 'binary' has changed.
         exp = """%s
 --- foobar\t(revision 3)
 +++ foobar\t(working copy)
-@@ -1,2 +0,0  @@
+@@ -1,2 +0,0 @@
 -foobar
 -barfoo
 %s
@@ -259,7 +259,7 @@ Binary file 'binary' has changed.
         exp = """%s
 --- foo\t(revision 0)
 +++ foo\t(working copy)
-@@ -0,0 +1,1  @@
+@@ -0,0 +1,1 @@
 +This is a simple test.
 """ % (TestDiffFiles.diff_hdr % 'foo')
         self.__check_diff(p, exp, 3)