diff --git a/src/or/dirauth/dirvote.c b/src/or/dirauth/dirvote.c
index dc35c892e0..5af6d841f8 100644
--- a/src/or/dirauth/dirvote.c
+++ b/src/or/dirauth/dirvote.c
@@ -2490,7 +2490,7 @@ networkstatus_add_detached_signatures(networkstatus_t *target,
       continue;
     }
 
-    old_sig = voter_get_sig_by_algorithm(target_voter, sig->alg);
+    old_sig = dirvote_get_voter_sig_by_alg(target_voter, sig->alg);
 
     /* If the target already has a good signature from this voter, then skip
      * this one. */
diff --git a/src/or/dirvote_common.c b/src/or/dirvote_common.c
index caa9138f05..b34f4fe20c 100644
--- a/src/or/dirvote_common.c
+++ b/src/or/dirvote_common.c
@@ -182,8 +182,8 @@ dirvote_recalculate_timing(const or_options_t *options, time_t now)
 /** Return the signature made by <b>voter</b> using the algorithm
  * <b>alg</b>, or NULL if none is found. */
 document_signature_t *
-voter_get_sig_by_algorithm(const networkstatus_voter_info_t *voter,
-                           digest_algorithm_t alg)
+dirvote_get_voter_sig_by_alg(const networkstatus_voter_info_t *voter,
+                             digest_algorithm_t alg)
 {
   if (!voter->sigs)
     return NULL;
diff --git a/src/or/dirvote_common.h b/src/or/dirvote_common.h
index 91d32aaa84..16621244b8 100644
--- a/src/or/dirvote_common.h
+++ b/src/or/dirvote_common.h
@@ -58,7 +58,7 @@ time_t dirvote_get_start_of_next_interval(time_t now,
                                           int offset);
 time_t dirvote_get_next_valid_after_time(void);
 
-document_signature_t *voter_get_sig_by_algorithm(
+document_signature_t *dirvote_get_voter_sig_by_alg(
                            const networkstatus_voter_info_t *voter,
                            digest_algorithm_t alg);
 
diff --git a/src/or/routerparse.c b/src/or/routerparse.c
index b27833c3ed..9769d5ab50 100644
--- a/src/or/routerparse.c
+++ b/src/or/routerparse.c
@@ -3972,7 +3972,7 @@ networkstatus_parse_vote_from_string(const char *s, const char **eos_out,
       }
     }
 
-    if (voter_get_sig_by_algorithm(v, sig->alg)) {
+    if (dirvote_get_voter_sig_by_alg(v, sig->alg)) {
       /* We already parsed a vote with this algorithm from this voter. Use the
          first one. */
       log_fn(LOG_PROTOCOL_WARN, LD_DIR, "We received a networkstatus "