diff --git a/doc/config.html b/doc/config.html
index 2c36c225..2a9b2a8a 100755
--- a/doc/config.html
+++ b/doc/config.html
@@ -2272,6 +2272,12 @@ Options Location = Main Building{a}, New Building{b}, Old Building{c}
         This specifies the number of text lines displayed in a summary page.
         Zero displays no text at all. The default is 3.
       </li>
+      <li>
+        <b><code>Summary line length = x</code></b><br>
+        This specifies the number of charactes of the summary lines. After this
+        number of charactes, a line break is inserted in long lines to keep the
+        column width not too wide. The default is 40.
+      </li>
       <li>
         <b><code>Attachment lines = x</code></b><br>
         This specifies the number of text lines displayed for ASCII attachments.
diff --git a/src/elogd.c b/src/elogd.c
index e180d2ef..343dabda 100755
--- a/src/elogd.c
+++ b/src/elogd.c
@@ -16767,7 +16767,7 @@ void display_line(LOGBOOK * lbs, int message_id, int number, char *mode, int exp
                   int absolute_link)
 {
    char str[NAME_LENGTH], ref[256], *nowrap, sclass[80], format[256], file_name[MAX_PATH_LENGTH], *slist,
-       *svalue, comment[256];
+       *svalue, comment[256], param[80];
    char display[NAME_LENGTH], attr_icon[80];
    int i, j, n, i_line, index, colspan, n_attachments, line_len, thumb_status, max_line_len, n_lines,
        max_n_lines;
@@ -17333,7 +17333,10 @@ void display_line(LOGBOOK * lbs, int message_id, int number, char *mode, int exp
    if (strieq(mode, "Summary") && n_line > 0 && show_text) {
       rsprintf("<td class=\"summary\">");
 
-      max_line_len = n_line >= 10 ? 140 : 40;
+      if (getcfg(lbs->name, "Summary line length", param, sizeof(param)))
+         max_line_len = atoi(param);
+      else
+         max_line_len = n_line >= 10 ? 140 : 40;
       for (i = i_line = line_len = 0; i < (int) sizeof(str) - 1; line_len++, i++) {
          str[i] = text[i];
          if (line_break(text + i, encoding)) {