diff --git a/unittests/Format/FormatTest.cpp b/unittests/Format/FormatTest.cpp
index 81833e5..929e3c2 100644
--- a/unittests/Format/FormatTest.cpp
+++ b/unittests/Format/FormatTest.cpp
@@ -1173,6 +1173,13 @@
                "      some_other_var_(var + 1) { // lined up\n"
                "}",
                OnePerLine);
+  verifyFormat("Constructor()\n"
+               "    : aaaaa(aaaaaa),\n"
+               "      aaaaa(aaaaaa),\n"
+               "      aaaaa(aaaaaa),\n"
+               "      aaaaa(aaaaaa),\n"
+               "      aaaaa(aaaaaa) {}",
+               OnePerLine);
 
   // This test takes VERY long when memoization is broken.
   OnePerLine.BinPackParameters = false;