diff --git a/dvc/command/diff.py b/dvc/command/diff.py
index fdf8657da7..423a089a7f 100644
--- a/dvc/command/diff.py
+++ b/dvc/command/diff.py
@@ -87,8 +87,8 @@ def _digest(checksum):
             )
 
         groups.append(
-            "summary: added ({added}), deleted ({deleted}),"
-            " modified ({modified})".format_map(summary)
+            "files summary: {added} added, {deleted} deleted,"
+            " {modified} modified".format_map(summary)
         )
 
         return "\n\n".join(groups)
diff --git a/tests/unit/command/test_diff.py b/tests/unit/command/test_diff.py
index 5d5a594616..6ce2be58da 100644
--- a/tests/unit/command/test_diff.py
+++ b/tests/unit/command/test_diff.py
@@ -19,7 +19,7 @@ def test_default(mocker, caplog):
         "Added:\n"
         "    file\n"
         "\n"
-        "summary: added (1), deleted (0), modified (0)"
+        "files summary: 1 added, 0 deleted, 0 modified"
     ) in caplog.text
 
 
@@ -51,7 +51,7 @@ def test_checksums(mocker, caplog):
         "Modified:\n"
         "    AAAAAAAA..BBBBBBBB  file\n"
         "\n"
-        "summary: added (0), deleted (2), modified (1)"
+        "files summary: 0 added, 2 deleted, 1 modified"
     ) in caplog.text