diff --git a/tests/libtest/test.h b/tests/libtest/test.h
index b0b119e5b740d406d0d17f470ee2e91a829a048b..481716e6f937d38a2c9e4a36be515b7aa6602016 100644
--- a/tests/libtest/test.h
+++ b/tests/libtest/test.h
@@ -19,4 +19,5 @@
 #endif
 
 extern char *arg2; /* set by first.c to the argv[2] or NULL */
-
+int test(char *URL); /* the actual test function provided by each individual
+                        libXXX.c file */