diff --git a/gtk4/text_view.c b/gtk4/text_view.c
index 0c7363f..86e24dc 100644
--- a/gtk4/text_view.c
+++ b/gtk4/text_view.c
@@ -67,7 +67,7 @@ void kc3_gtk4_text_view_set_text (GtkTextView **text_view,
{
GtkTextBuffer *buffer;
assert(text_view);
- assert(dest);
+ assert(text);
if (! (buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(*text_view)))) {
err_puts("kc3_gtk4_text_view_set_text: gtk_text_view_get_buffer");
assert(! "kc3_gtk4_text_view_set_text: gtk_text_view_get_buffer");