diff --git a/src/calcurse.h b/src/calcurse.h
index 7f03b68..763264d 100644
--- a/src/calcurse.h
+++ b/src/calcurse.h
@@ -510,7 +510,7 @@ struct notify_app {
 
 struct io_file {
 	FILE *fd;
-	char name[BUFSIZ];
+	char *name;
 };
 
 /* Available keys. */
diff --git a/src/io.c b/src/io.c
index 66f5a95..43c9b28 100644
--- a/src/io.c
+++ b/src/io.c
@@ -1396,7 +1396,7 @@ struct io_file *io_log_init(void)
 		ERROR_MSG(_("Warning: could not create temporary log file, Aborting..."));
 		goto error;
 	}
-	strncpy(log->name, logname, sizeof(log->name));
+	log->name = mem_strdup(logname);
 	log->fd = fopen(log->name, "w");
 	if (log->fd == NULL) {
 		ERROR_MSG(_("Warning: could not open temporary log file, Aborting..."));
@@ -1446,6 +1446,7 @@ void io_log_free(struct io_file *log)
 	EXIT_IF(unlink(log->name) != 0,
 		_("Warning: could not erase temporary log file %s, Aborting..."),
 		log->name);
+	mem_free(log->name);
 	mem_free(log);
 }