diff -pdru ratpoison/src/history.c ratpoison.build/src/history.c
--- ratpoison/src/history.c	2013-08-07 12:08:11.160005043 -0300
+++ ratpoison.build/src/history.c	2013-08-07 13:47:38.988040803 -0300
@@ -201,6 +201,8 @@ history_load (void)
     /* defaults.history_size might be only set later */
     history_add_upto (hist_COMMAND, line, INT_MAX);
   }
+  if (line)
+      free(line);
   if (ferror (f)) {
     PRINT_DEBUG (("ratpoison: error reading %s - %s\n", filename, strerror (errno)));
     fclose(f);