diff --git a/tests/test_aliases.zunit b/tests/test_aliases.zunit
index 878e69a..521c6b0 100644
--- a/tests/test_aliases.zunit
+++ b/tests/test_aliases.zunit
@@ -132,3 +132,12 @@
     assert $output contains 'Found existing alias for "echo"'
     assert $state equals 0
 }
+
+@test 'issue 79 - expands aliases' {
+    alias gd='git diff'
+    alias gdw='git diff --word-diff'
+    run _check_aliases "gd --word-diff"
+
+    assert $output contains 'You should use: "gdw"'
+    assert $state equals 0
+}
\ No newline at end of file