diff --git a/appl/test/gss_common.h b/appl/test/gss_common.h
index 466d33ac1..a29dc3577 100644
--- a/appl/test/gss_common.h
+++ b/appl/test/gss_common.h
@@ -43,3 +43,5 @@ void gss_verr(int exitval, int status, const char *fmt, va_list ap)
 
 void gss_err(int exitval, int status, const char *fmt, ...)
     __attribute__ ((format (printf, 3, 4)));
+
+gss_OID select_mech(const char *);