diff -up rcs-5.9.0/src/rlog.c.fix_locks rcs-5.9.0/src/rlog.c

--- rcs-5.9.0/src/rlog.c.fix_locks	2019-04-24 18:24:50.631189377 +0200

+++ rcs-5.9.0/src/rlog.c	2019-04-24 18:25:03.060364074 +0200

@@ -894,7 +894,6 @@ rlog_main (const char *cmd, int argc, ch

         repo_filename = REPO (filename);

         tip = REPO (tip);

         defbr = GROK (branch);

-        locks = GROK (locks);

         strictly_locking = BE (strictly_locking);

         kws = BE (kws);

@@ -902,6 +901,8 @@ rlog_main (const char *cmd, int argc, ch

         if (lockflag)

           trunclocks (&criteria);

+        locks = GROK (locks);

+

         /* Do nothing if ‘-L’ is given and there are no locks.  */

         if (onlylockflag && !locks)

           continue;