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-rw-r--r--gtk-gui.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/gtk-gui.c b/gtk-gui.c
index 18a022c9d..f3646b0ff 100644
--- a/gtk-gui.c
+++ b/gtk-gui.c
@@ -2091,7 +2091,7 @@ void set_dc_nickname(struct dive *dive)
entry = gtk_entry_new();
gtk_container_add(GTK_CONTAINER(frame), entry);
gtk_entry_set_max_length(GTK_ENTRY(entry), 68);
- snprintf(nickname, 69, "%s (%08x)", dive->dc.model, dive->dc.deviceid);
+ snprintf(nickname, sizeof(nickname), "%s (%08x)", dive->dc.model, dive->dc.deviceid);
gtk_entry_set_text(GTK_ENTRY(entry), nickname);
gtk_widget_show_all(dialog);
if (gtk_dialog_run(GTK_DIALOG(dialog)) == GTK_RESPONSE_ACCEPT) {