diff --git a/library/md4.c b/library/md4.c
index 7b535c9..9a82532 100644
--- a/library/md4.c
+++ b/library/md4.c
@@ -444,8 +444,7 @@
     { "message digest" },
     { "abcdefghijklmnopqrstuvwxyz" },
     { "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" },
-    { ("12345678901234567890123456789012345678901234567890123456789012"
-      "345678901234567890") }
+    { "12345678901234567890123456789012345678901234567890123456789012345678901234567890" }
 };
 
 static const size_t md4_test_strlen[7] =