diff --git a/library/ripemd160.c b/library/ripemd160.c
index abb92b7..603b6ba 100644
--- a/library/ripemd160.c
+++ b/library/ripemd160.c
@@ -478,8 +478,7 @@
     { "abcdefghijklmnopqrstuvwxyz" },
     { "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" },
     { "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" },
-    { ("12345678901234567890123456789012345678901234567890123456789012"
-      "345678901234567890") },
+    { "12345678901234567890123456789012345678901234567890123456789012345678901234567890" },
 };
 
 static const size_t ripemd160_test_strlen[TESTS] =