diff --git a/pages/common/diff.md b/pages/common/diff.md
index 72b6afbed..12f7d9ac6 100644
--- a/pages/common/diff.md
+++ b/pages/common/diff.md
@@ -10,10 +10,14 @@
 
 `diff -w {{file1}} {{file2}}`
 
-- Compare files, showing differences side by side:
+- Compare files, showing the differences side by side:
 
 `diff -y {{file1}} {{file2}}`
 
+- Compare files, showing the differences in unified format (as used by `git diff`):
+
+`diff -u {{file1}} {{file2}}`
+
 - Compare directories recursively:
 
 `diff -r {{directory1}} {{directory2}}`