--- a/opendkim/opendkim-db.c
+++ b/opendkim/opendkim-db.c
@@ -5689,6 +5689,7 @@ dkimf_db_strerror(DKIMF_DB db, char *err, size_t errlen)
 	  case DKIMF_DB_TYPE_DSN:
 	  {
 		char *p;
+		size_t len;
 
 		strlcpy(err, odbx_error((odbx_t *) db->db_handle,
 		                        db->db_status), errlen);
@@ -5699,8 +5700,9 @@ dkimf_db_strerror(DKIMF_DB db, char *err, size_t errlen)
 			else
 				break;
 		}
-	  }
 
+		return strlen(err) + 1;
+	  }
 #endif /* USE_ODBX */
 
 #ifdef USE_LDAP
--- a/opendkim/opendkim.c
+++ b/opendkim/opendkim.c
@@ -4745,7 +4745,30 @@ dkimf_add_signrequest(struct msgctx *dfc, DKIMF_DB keytable, char *keyname,
 
 		if (dkimf_db_get(keytable, keyname, strlen(keyname),
 		                 dbd, 3, &found) != 0)
+		{
+			char err[BUFRSZ];
+
+			memset(err, '\0', sizeof err);
+			(void) dkimf_db_strerror(keytable, err, sizeof err);
+
+			if (dolog)
+			{
+				if (err[0] != '\0')
+				{
+					syslog(LOG_ERR,
+					       "key '%s': dkimf_db_get(): %s",
+					       keyname, err);
+				}
+				else
+				{
+					syslog(LOG_ERR,
+					       "key '%s': dkimf_db_get() failed",
+					       keyname);
+				}
+			}
+
 			return -1;
+		}
 
 		if (!found)
 			return 1;